Inter-Cell D2D Resource Coordination via Base Station Relay
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Solution Overview
Problem
In device-to-device (D2D) communication systems, coordinating radio resource allocation across multiple wireless controllers is challenging, especially when receiving devices are controlled by different controllers than the transmitting device, leading to difficulties in communicating resource allocations effectively.
Innovation Solution
A method and system where a first base station allocates D2D communication resources to a first electronic device and transmits information about the allocation to a second base station controlling a receiving device, enabling inter-cell coordination and updating resource pools periodically or upon changes to ensure all devices in a communication group can receive data transmissions correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transmitting device is controlled by one wireless controller and a receiving device is controlled by another wireless controller, then D2D communication can occur across different cells, but it becomes difficult for the first controller to communicate the allocated D2D resources to the receiving device controlled by the second controller
Solution Approach 1:
The patent introduces a relay mechanism where the first wireless controller communicates D2D resource allocation information to the second wireless controller, which then forwards it to the receiving device. This intermediary approach enables cross-cell D2D communication while maintaining the existing control architecture, solving the problem of difficult resource allocation communication between controllers of different cells
2Ease of operation
If the first wireless controller directly communicates D2D resource allocation to receiving devices, then communication is simple and direct, but this is only possible when the receiving device is controlled by the same controller as the transmitting device
Solution Approach 1:
The patent segments the resource allocation communication process into two parts: intra-cell allocations are communicated directly by the controlling controller, while inter-cell allocations are communicated through the inter-controller relay mechanism. This segmentation allows the system to maintain simple direct communication where possible while enabling cross-cell functionality where needed
Data Source
AI summary
Various disclosed embodiments include methods and apparatus for inter-cell coordination for a device-to-device communication resource allocation. A method includes allocating, at a first base station, a device-to-device (D2D) communication resource from a pool of communication resources to a first electronic device controlled by the first base station, wherein the first electronic device is within a D2D communication group. The method also includes, in response to a second electronic device within the D2D communication group being controlled by a second base station, transmitting, by the first base station, information corresponding to the D2D communication resource allocation to the second base station.