Relay-Assisted Resource Request for D2D Energy Reduction
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Solution Overview
Problem
In co-site-coverage D2D communication, devices with limited energy resources face increased energy consumption when directly requesting data transmission resources from a base station, which can lead to accelerated battery depletion, especially for devices sensitive to energy consumption.
Innovation Solution
A resource request method where a target device sends a message to a relay device, which then requests data transmission resources from the network side node on its behalf, reducing the target device's energy consumption while ensuring resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the target device directly requests data transmission resources from the base station, then the resource allocation process is simple and direct, but the energy consumption of the target device increases significantly
Solution Approach 1:
The patent introduces a relay device as an intermediary between the target device and the base station. The relay device receives resource requests from the target device, formulates them into relayed requests, and transmits them to the base station. This intermediary mechanism allows the target device to obtain resources without directly communicating with the base station, thereby reducing its energy consumption while maintaining the resource allocation function.
2Use of energy by moving object
If the target device uses relay device to request resources, then energy consumption is reduced, but the communication process becomes more complex
Solution Approach 1:
The relay device performs preliminary actions by pre-establishing communication channels with both the target device and the base station, and pre-configuring resource request templates. When the target device needs resources, the relay device can immediately formulate and transmit requests without delay, reducing the time penalty associated with the additional communication hop.
3Duration of action of moving object
If the target device directly communicates with base station, then communication efficiency is high, but battery life is reduced due to increased energy consumption
Solution Approach 1:
The relay device serves as a mediator that handles the complexity of resource request formulation and transmission. The target device simply needs to indicate its resource needs, and the relay device manages the detailed communication with the base station. This division of labor extends the target device's operational life by reducing its energy expenditure while maintaining ease of operation through automated relay assistance.
Data Source
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AI summary
A resource request method and system, a device, and a network side node are provided. The method includes the following steps: A target device sends a first target device message to a relay device. When receiving the first target device message, the relay device sends a first relay device message to a network side node according to the first target device message. The network side node receives the first relay device message, and sends first grant information to the target device according to the first relay device message. The first grant information includes a data transmission resource allocated by the network side node to the target device. According to embodiments of the present invention, energy consumption of a sending device, that is, a target device, can be reduced while the sending device obtains a transmission resource.