D2D Transmission Resource Pool Configuration for Battery Optimization
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Solution Overview
Problem
In wireless communication networks, device-to-device (D2D) communications, especially in scenarios like V2P and P2V, result in excessive resource usage and battery consumption due to the lack of efficient synchronization and resource management for transmissions and receptions.
Innovation Solution
The implementation of a wireless communication system that configures device-to-device transmission by generating and transmitting sequences on resource pools, allowing multiple devices to share resources and reduce power consumption by limiting transmissions only when necessary, such as when a pedestrian UE is crossing a road, using a base unit to manage resource pools and configure device behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If device-to-device transmission is implemented without efficient synchronization and resource management, then communication capability is provided, but resource usage and battery consumption increase excessively
Solution Approach 1:
The patent implements periodic clear channel assessment (CCA) operations where UEs perform LBT procedures at regular intervals before transmitting D2D communications. This periodic action allows devices to transmit only when the channel is clear, avoiding continuous transmission and reducing unnecessary battery consumption while maintaining communication capability.
Solution Approach 2:
The patent introduces dynamic resource management where UEs can be configured with multiple resource pools and dynamically select appropriate resources based on current channel conditions and transmission needs. This dynamic approach optimizes resource usage by allocating resources only when and where needed, reducing overall energy consumption.
2Reliability
If continuous device-to-device transmission is performed, then communication reliability is improved, but resource usage increases excessively
Solution Approach 1:
The patent employs periodic transmission opportunities with clear channel assessment at each interval. UEs perform CCA before each potential transmission and only transmit when the channel is clear, ensuring reliable communication when needed while avoiding resource waste during periods when transmission is unnecessary or blocked by other signals.
Solution Approach 2:
The patent allows dynamic adjustment of transmission parameters including resource pool selection, transmission power, and timing based on channel conditions and QoS requirements. This enables the system to maintain communication reliability by adapting parameters to current conditions while optimizing resource usage by using only the necessary amount of resources.
3Area of stationary object
If multiple devices transmit simultaneously without resource management, then communication coverage is expanded, but interference and resource conflict increase
Solution Approach 1:
The patent divides the available time-frequency resources into multiple resource pools that can be independently configured and managed. Different UEs can be assigned to different resource pools, segmenting the overall resource space to reduce conflicts and interference while maintaining expanded communication coverage through coordinated multi-device transmission.
Solution Approach 2:
The patent introduces clear channel assessment as an intermediary mechanism that mediates between multiple potential transmitters. Each UE performs CCA before transmitting, and the LBT procedure acts as a mediator to coordinate transmissions, allowing multiple devices to share the medium efficiently by detecting and avoiding collisions, thus reducing interference while maintaining coverage.
Data Source
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AI summary
Apparatuses, methods, and systems are disclosed for device-to-device transmission. One apparatus includes a processor that generates a first signal indicating a first sequence and a first resource pool. Transmission of the first sequence within the first resource pool indicates a behavior of a first device that transmits the transmission of the first sequence. Moreover, the first resource pool is configured for use by multiple devices. The apparatus also includes a transmitter that transmits the first signal to the first device.