D2D Resource Allocation for Multi-Destination Data Transmission
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Solution Overview
Problem
In Device to Device (D2D) communications, existing technologies face challenges with large delays and low data sending efficiency when multiple pieces of data need to be sent, as they can only use one time frequency resource per resource scheduling period, limiting the ability to send data to multiple destinations simultaneously.
Innovation Solution
The method involves a network device receiving an indication from user equipment (UE) that it can send data to multiple destinations using multiple time frequency resources within one resource scheduling period, allowing the allocation of these resources for efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station schedules only one time frequency resource for the D2D UE in each resource scheduling period, then the resource allocation is simple and manageable, but the data sending efficiency is low and delay is large when multiple pieces of data need to be sent
Solution Approach 1:
The patent divides the resource allocation into two independent parts: control information resources (SA) and data resources. The network device can independently allocate multiple SA resources and multiple data resources to the UE within one resource scheduling period. This segmentation allows the UE to send multiple pieces of data to different destination addresses simultaneously, improving data sending efficiency while keeping the resource allocation mechanism manageable through independent control of each resource type.
2Productivity
If one time frequency resource is used to send data to only one destination address, then the resource allocation is straightforward and unambiguous, but the UE cannot send data to multiple destination addresses within the same resource scheduling period
Solution Approach 1:
The patent introduces a new dimension to resource allocation by allowing multiple SA resources and multiple data resources to coexist within the same resource scheduling period. Instead of limiting the system to a single resource allocation per period, the invention enables parallel resource allocations across different resource dimensions (different SA resources, different data resources), allowing the UE to address multiple destination addresses simultaneously and reduce sending delays.
3Loss of time
If the UE waits for the next resource scheduling period to send data to a new destination address, then the resource allocation remains stable and predictable, but the data sending delay increases significantly
Solution Approach 1:
The patent enables preliminary resource allocation by allowing the network device to pre-allocate multiple SA resources and multiple data resources to the UE within one resource scheduling period. This preliminary action ensures that the UE has ready-to-use resources for multiple destination addresses before data transmission begins, eliminating the need to wait for the next scheduling period and significantly reducing data sending delay while improving overall efficiency.
Data Source
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AI summary
Embodiments of the present invention provide a data sending method, user equipment, and a network device. The method includes: receiving, by a network device, first indication information and a resource request message that are sent by user equipment UE; and allocating, by the network device to the UE according to the first indication information and the resource request message, time frequency resources used by the UE to send at least two pieces of second to-be-sent data in a resource scheduling period. According to the method in the embodiments of the present invention, data sending efficiency of the UE is improved.