D2D Communication Priority Resource Index Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing device-to-device (D2D) communication systems face challenges in efficiently managing priority levels for various applications and user groups, leading to suboptimal resource allocation and communication performance.
Innovation Solution
A method and apparatus that classify transmission resources into index sets based on priority, allocate more resource indexes and power to higher-priority communication objects, and utilize resource reservation indication bits and reference signals to optimize channel usage, ensuring preferential allocation of physical sidelink shared channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission resources are allocated equally to all communication objects, then resource allocation simplicity is maintained, but communication efficiency and priority differentiation deteriorate
Solution Approach 1:
The patent segments transmission resources into multiple resource index sets (first resource index set, second resource index set, etc.) that are differently allocated to communication objects based on their priority levels. High-priority objects receive resource index sets with more resource indexes, while low-priority objects receive resource index sets with fewer resource indexes. This segmentation enables differentiated resource allocation that improves communication efficiency without requiring complex dynamic allocation mechanisms.
Solution Approach 2:
The patent applies local quality by assigning different resource allocation characteristics to different communication objects based on their specific priority requirements. Each communication object receives a tailored resource index set configuration matched to its priority level, allowing high-priority applications to obtain superior resource allocation while low-priority applications receive adequate but limited resources. This localized optimization resolves the contradiction by making resource allocation complexity only where priority differentiation is needed.
2Reliability
If more resources are allocated to high-priority communication objects, then data transmission success probability is improved, but resource allocation fairness deteriorates
Solution Approach 1:
The patent changes the allocation parameters (number of resource indexes, power allocation levels) based on communication object priority. High-priority objects receive resource index sets with larger numbers of resource indexes and higher power allocation, directly improving their data transmission success probability. Low-priority objects receive resource index sets with fewer resource indexes and lower power allocation, maintaining a baseline level of service. This parameter-based differentiation resolves the contradiction by making resource allocation adaptive to priority requirements while ensuring all objects receive some resources.
3Productivity
If resource reservation indication bits are transmitted for all communication objects, then channel utilization is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by transmitting resource reservation indication bits selectively rather than universally. Communication objects with high priority that require guaranteed channel access receive the resource reservation indication bit functionality, while low-priority objects do not receive this capability. This selective application improves channel utilization for critical communications without incurring the full signaling overhead of universal resource reservation, resolving the contradiction between channel utilization and signaling overhead.
Data Source
AI summary
The present invention relates to a method and an apparatus for controlling priority in device-to-device communications. A plurality of transmission resources are classified into resource index sets depending on indexes, and a priority given to a communication object to which a device communication is applied is determined. One resource index set is allocated to a device of the communication object depending on the priority of the communication object.