D2D Resource Block Selection for Wireless Communication
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Solution Overview
Problem
Current device-to-device (D2D) communication systems face challenges in efficiently selecting resource blocks for data transmission on subchannels, leading to increased implementation complexity and signaling overhead in user equipment (UE).
Innovation Solution
A method for a D2D UE to select a subchannel with a specific number of resource blocks, such as 5, 6, 10, 15, 20, 25, 50, 75, or 100, to reduce implementation complexity and signaling overhead by optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If D2D communication is implemented without eNB intervention, then network overhead is reduced and data transmission efficiency is improved, but resource block selection complexity and signaling overhead in UE increase
Solution Approach 1:
The patent segments the resource selection process into two parts: control information transmission on PSCCH and data transmission on PSSCH. This segmentation allows independent optimization of each channel's resource allocation, reducing the overall complexity of resource block selection while maintaining efficient D2D communication.
Solution Approach 2:
The patent employs preliminary action by having UEs perform sensing and measurement of channel conditions before selecting resource blocks for D2D transmission. This advance preparation enables UEs to make informed resource selection decisions, reducing complexity during actual data transmission while improving transmission efficiency through better resource allocation.
2Adaptability or versatility
If multiple resource structures are supported for control information and data transmission, then adaptability is improved, but implementation complexity in UE increases
Solution Approach 1:
The patent applies universality by designing a unified resource allocation framework where the same resource selection mechanisms can be applied to both PSCCH (control information) and PSSCH (data) transmission. This multi-functional approach allows the system to support multiple resource structures without proportionally increasing UE implementation complexity, as the same algorithms serve multiple purposes.
Data Source
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AI summary
One embodiment of the present invention relates to a method for a device-to-device (D2D) terminal to transmit a physical sidelink shared channel (PSSCH) in a wireless communication system, the method comprising: a step in which the terminal selects one or more resource blocks to transmit the PSSCH in a subchannel; and a step in which the terminal transmits the PSSCH via the selected one or more resource blocks, wherein the number of the selected one or more resource blocks is the largest value, among values corresponding to the products of the respective exponentiation values of 2, 3, and 5, which does not exceed the number of all resource blocks available for PSSCH transmission in the subchannel.