D2D Resource Allocation via Central Terminal Mediator
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Solution Overview
Problem
Current Device-to-Device (D2D) communication technologies face inefficiencies and reliability issues due to the lack of cellular network coordination, leading to increased transmission collisions and prolonged delays as the number of terminals increases, affecting communication efficiency and reliability.
Innovation Solution
A method where terminal devices negotiate to determine a central terminal device and member devices within a group, allowing the central device to allocate radio resources for D2D communication without cellular network coordination, thereby reducing collisions and improving scheduling efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Listen-Before-Talk (LBT) scheduling manner is used without cellular network coordination, then resource allocation can be implemented in D2D communication, but transmission collisions increase and communication reliability decreases
Solution Approach 1:
The patent introduces a group leader as an intermediary device among D2D terminals. The group leader receives resource allocation requests from member terminals, determines appropriate radio resources, and allocates them to members. This mediator structure enables coordinated resource allocation without requiring cellular network involvement, thereby reducing transmission collisions while maintaining ease of operation.
2Adaptability or versatility
If LBT scheduling is used without network coordination, then D2D communication can occur independently, but communication time delay increases as the number of terminals increases
Solution Approach 1:
The patent implements preliminary resource allocation by the group leader before actual data transmission occurs. Member terminals send resource allocation requests to the group leader in advance, allowing the group leader to determine and reserve appropriate radio resources before the actual communication takes place. This preliminary action reduces waiting time and communication delays, especially as the number of terminals increases.
3Extent of automation
If distributed LBT scheduling is used, then no cellular network coordination is needed, but resource confliction occurs and D2D communication efficiency decreases
Solution Approach 1:
The group leader acts as an autonomous intermediary that coordinates resource allocation among D2D terminals without requiring cellular network involvement. This distributed mediation mechanism maintains the autonomy and automation of D2D communication while preventing resource conflicts through centralized decision-making within the D2D group, thereby improving communication efficiency.
Data Source
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AI summary
Provided is a method and device for inter-device communication, the method comprising: a first terminal device is determined to be a central terminal device for a first group, wherein the first group comprises the central terminal device and at least one member terminal device; and the first terminal device allocates a first radio resource for a second terminal device, such that the second terminal device carries out inter-device communication according to the first radio resource, wherein the second terminal device belongs to the member terminal devices of the first group. The present invention is capable of improving the efficiency and reliability of inter-device communication.