D2D Resource Pool Segmentation for IoV Interference Reduction
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Solution Overview
Problem
In the Internet of Vehicles (IoV) communication system, the coexistence of terminal devices using different transmission modes and protocols leads to mutual interference, particularly affecting the transmission reliability of devices using mode 3, which have their resources allocated by the base station, while devices using mode 4 may interfere due to lack of sensing capability.
Innovation Solution
The method involves determining distinct resource pools for terminal devices based on their transmission modes and sensing capabilities, ensuring that devices using mode 3 and mode 4 operate in non-overlapping resource pools, with mode 3 resources allocated by the base station and mode 4 resources selected independently, thereby reducing interference and enhancing resource utilization for devices supporting newer protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminal devices use different transmission modes and protocols for data transmission, then resource utilization and communication efficiency are improved, but mutual interference between devices increases and transmission reliability deteriorates
Solution Approach 1:
The patent segments the resource pool into multiple sub-resource pools based on terminal device types (mode 3, mode 4, sensing capability presence). Each sub-resource pool is dedicated to specific terminal types, preventing interference while maintaining high resource utilization. This segmentation resolves the contradiction by allowing diverse transmission modes to coexist without mutual interference.
Solution Approach 2:
The patent applies local quality by assigning different resource pool characteristics to different terminal device types. Terminals with sensing capability access resources differently than those without, and mode 3 terminals have protected resource allocations. This localized differentiation ensures each terminal type operates optimally without interfering with others, maintaining both efficiency and reliability.
2Ease of operation
If terminal devices independently select transmission resources without sensing capability, then device complexity and operation ease are improved, but interference with other terminal devices increases
Solution Approach 1:
The patent segments the resource pool to create dedicated sub-resource pools for terminals without sensing capability. These terminals independently select resources from their designated pool without needing to sense or avoid resources used by other terminal types, maintaining operational simplicity while eliminating interference through physical resource separation.
Solution Approach 2:
The patent introduces resource pool configuration information as an intermediary, provided by the network device to terminals. This intermediary guides terminals without sensing capability to select resources that will not cause interference, simplifying their operation while preventing harmful effects through network-coordinated resource allocation.
3Reliability
If resource pools are divided for different terminal types, then interference is reduced and transmission reliability is improved, but resource pool management complexity increases
Solution Approach 1:
The patent segments the resource pool into clearly defined sub-resource pools with specific access rules for different terminal types. This segmentation, while creating multiple pools, simplifies management by establishing clear access boundaries and rules, reducing the complexity of coordinating interference avoidance compared to managing a single shared pool with complex collision avoidance mechanisms.
Solution Approach 2:
The patent changes the parameter of resource pool structure from a single unified pool to multiple segmented pools with different access characteristics. This parameter change simplifies management by allowing each sub-resource pool to be configured and managed independently with terminal-specific rules, reducing overall system complexity through modular resource management.
Data Source
AI summary
The present disclosure discloses a method for D2D communication, a terminal device and a network device, where the method includes: determining, by a terminal device, a resource pool for data transmission from a plurality of resource pools according to a transmission mode used by the terminal device and whether the terminal device has a sensing capability, where different resource pools in the plurality of resource pools are used for data transmission by different types of terminal devices, and at least one of the following information of the different types of terminal devices is different: a transmission mode in use, a supported version of a communication protocol, and whether or not there is the sensing capability; performing, by the terminal device, data transmission using a time-frequency resource in the resource pool. Therefore, different types of terminal devices can transmit data together in a communication system and mutual interference is reduced.