Cross-Base Station D2D Resource Negotiation via Core Network Mediator
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Solution Overview
Problem
Current D2D communication technologies cannot establish direct communication between devices served by different base stations or access points due to the inability to perform resource negotiation across these entities.
Innovation Solution
A resource negotiation method and system that allows a second base station to obtain and allocate available channel resources for D2D communication between devices connected to different base stations, enabling successful resource allocation and notification of allocated resources to both devices via their respective base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If base station allocates channel resources for D2D communication between devices served by the same base station, then resource allocation is simple and efficient, but D2D communication cannot be established between devices served by different base stations
Solution Approach 1:
The patent introduces a core network entity as an intermediary to facilitate resource negotiation between base stations. The core network receives D2D communication establishment requests, queries available channel resources from multiple base stations, and coordinates resource allocation. This mediator enables cross-base station D2D communication without requiring direct complex negotiation between base stations, thus expanding coverage while managing complexity centrally.
Solution Approach 2:
The patent segments the resource negotiation process into distinct phases: request reception at core network, separate channel resource queries to different base stations, independent available resource determination at each base station, and centralized coordination. This segmentation allows each base station to independently assess its resources while the core network orchestrates the overall allocation, enabling scalable multi-base station D2D support.
2Productivity
If base station independently allocates channel resources for local D2D communication, then resource allocation is efficient and quick, but resource utilization across the network is suboptimal
Solution Approach 1:
The patent implements a feedback mechanism where base stations report their available channel resources to the core network, which then makes informed allocation decisions. The core network receives feedback about each base station's channel availability, processes this information centrally, and allocates resources optimally across the network. This feedback loop enables both efficient local allocation and optimal network-wide resource utilization.
Solution Approach 2:
The core network entity serves multiple functions: it acts as a request receiver, resource query coordinator, available resource aggregator, and final allocation decision-maker. This multi-functional universal entity consolidates the complexity of cross-base station resource negotiation, allowing individual base stations to maintain simple efficient local allocation while the core network optimizes overall network resource utilization through its universal coordinating role.
Data Source
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AI summary
Provided in embodiments of the present invention are a resource negotiation method, device, and system for D2D communication. The method comprises: a second base station acquires an available channel resource of a first device, where the first device is connected with a first base station; the second base station allocates, on the basis of an available channel resource of a second device connected with self and of the available channel resource of the first device, a D2D communication resource for D2D communication between the first device and the second device; and the second base station notifies the second device of the allocated D2D communication resource and notifies the first device via the first base station. The resource negotiation method, device, and system for D2D communication provided in the embodiments of the present invention implement resource negotiation for successful D2D communication between devices under different base stations or access points.