Terminal Resource Set Alignment for Reliable D2D and V2X Scheduling
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Solution Overview
Problem
Existing D2D and V2X communication systems face challenges in accurately determining transmission resources, leading to issues such as hidden nodes, half-duplex problems, and excessive power consumption during resource selection.
Innovation Solution
A method for determining a time-frequency range of a transmission resource set is provided, where a first terminal sends a resource set to a second terminal, enabling both to determine the same time-frequency range for resource selection, thereby improving transmission reliability and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If terminals autonomously select transmission resources in a resource pool, then transmission flexibility and spectrum efficiency are improved, but hidden node problems and half-duplex conflicts occur leading to reduced transmission reliability
Solution Approach 1:
The patent implements a feedback mechanism where the first terminal sends resource set information to the second terminal, and the second terminal provides feedback about its resource selection and reception status. This feedback loop enables both terminals to coordinate their resource usage, avoiding hidden node problems and half-duplex conflicts while maintaining autonomous resource selection flexibility.
Solution Approach 2:
The patent introduces resource set information as an intermediary element that mediates between the two terminals. This intermediary carries timing and frequency domain information that both terminals use to align their resource selections, effectively resolving conflicts without requiring direct terminal-to-terminal negotiation or base station intervention.
2Reliability
If terminals perform continuous resource sensing and selection, then transmission reliability is improved, but power consumption increases excessively
Solution Approach 1:
The patent applies preliminary action by having the first terminal pre-determine and send resource set information to the second terminal before actual data transmission. This allows the second terminal to prepare its resource selection in advance based on the received information, reducing the need for continuous sensing and lowering power consumption while maintaining reliable transmission.
Solution Approach 2:
The patent implements periodic action through configured resource pools and periodic resource set information transmission. Instead of continuous resource sensing, terminals perform sensing and selection at periodic intervals defined by the resource pool configuration, significantly reducing power consumption while maintaining transmission reliability through regular resource updates.
3Reliability
If base station allocates transmission resources to terminals, then transmission reliability is improved, but spectrum efficiency and transmission delay are degraded
Solution Approach 1:
The patent segments the resource allocation function between the base station and the terminals. The base station configures resource pools and provides overall coordination, while terminals autonomously select specific resources within those pools based on local conditions and received resource set information. This segmentation maintains reliability through base station oversight while improving spectrum efficiency through autonomous terminal selection.
Data Source
AI summary
The present application relates to a resource set transmission method, and terminals. The resource set transmission method comprises: a first terminal sends a transmission resource set to a second terminal, a transmission resource comprised in the transmission resource set being a transmission resource within a first time-frequency range. According to implementations of the present application, the time-frequency range of a transmission resource set can be accurately determined, so that the sending end and the receiving end of the resource set can determine the same time-frequency range, so as to determine the time-frequency location corresponding to a transmission resource in the transmission resource set, and perform correct resource selection according to the transmission resource in the transmission resource set.