D2D Resource Allocation Using Device Attribute Information
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Solution Overview
Problem
Existing Device-to-Device (D2D) communication methods fail to ensure successful data transmission between terminals due to allocated resources exceeding the receiving capability of low-cost terminals, leading to transmission failures.
Innovation Solution
The method involves the first terminal sending device attribute information, such as reception and transmission bandwidth, and maximum data block size, to the base station, which determines and configures appropriate transmission resources within the terminal's capabilities, ensuring successful D2D data transmission by selecting resources from allocated pools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If D2D transmission resources are allocated through dedicated signaling semi-static configuration or dynamic requesting, then resource allocation flexibility is improved, but transmission reliability deteriorates because the allocated resources may exceed the receiving capability of low-cost terminals
Solution Approach 1:
The patent changes the parameter of resource allocation by introducing device attribute information (reception bandwidth, transmission bandwidth, maximum data block size) as a new dimension for resource configuration. The base station adjusts resource parameters based on the receiving terminal's capabilities, transforming a one-size-fits-all allocation approach into a capability-adapted allocation mechanism that resolves the contradiction between flexibility and reliability.
Solution Approach 2:
The patent applies preliminary action by having the receiving terminal report its device attribute information to the base station before resource allocation occurs. This advance information allows the base station to pre-calculate and configure appropriate resource parameters that match the terminal's receiving capability, preventing transmission failures before they occur.
2Productivity
If transmission resources are allocated without considering terminal receiving capability, then resource allocation speed is improved, but data transmission success rate deteriorates
Solution Approach 1:
The receiving terminal reports device attribute information to the base station in advance, enabling the base station to perform capability-based resource configuration before actual data transmission begins. This preliminary action ensures that resource allocation is both fast and reliable, as the base station can immediately allocate appropriate resources without needing to trial-and-error during actual transmission.
3Adaptability or versatility
If D2D communication uses ungranted frequency bands like Bluetooth or WiFi Direct, then communication independence is improved, but spectrum resource utilization deteriorates
Solution Approach 1:
The patent makes the D2D communication system universal by enabling it to operate within the cellular network's granted frequency bands rather than requiring separate ungranted bands. This allows the same spectrum resources to serve both cellular communications and D2D communications, achieving multi-functionality of the frequency spectrum while maintaining D2D communication capabilities through base station-coordinated resource allocation.
Data Source
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AI summary
Provided are a data sending method, comprising: a first terminal sends to a base station a resource allocation request, the resource allocation request containing device attribute information of a second terminal; the first terminal receives transmission resource allocation information transmitted by the base station, wherein the transmission resource is determined by the base station according to the device attribute information; and the first terminal employs the transmission resource to transmit to the second terminal D2D data. In this way, when a second terminal is a low-cost terminal, and a first terminal is requesting for a resource in a semi-static or dynamic manner, the method in the embodiments of the present invention can determine, by sufficiently utilizing device attribute information of the low-cost terminal, a transmission resource within a receiving capability range of the second terminal, thus ensuring successful D2D transmission between the two terminals.