Base Station Resource Preemption for V2X Priority Services
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Solution Overview
Problem
In the context of vehicle-to-everything (V2X) communication, there is a challenge in ensuring that high-priority services can meet their stringent time delay requirements due to insufficient transmission resources, particularly when low-priority services are allocated reserved resources.
Innovation Solution
A data processing method and apparatus that allows for the preemption of transmission resources from lower-priority services to higher-priority services when insufficient resources are available. This is achieved by configuring a first transmission resource for a first priority service and selectively allocating part of this resource to a second priority service through the use of downlink control information (DCI) that indicates the preemption of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission resources are allocated to low-priority services, then resource utilization is improved, but high-priority services cannot meet their time delay requirements
Solution Approach 1:
The patent implements dynamic resource allocation where the base station can reallocate transmission resources from low-priority services to high-priority services based on real-time service requirements. The network device dynamically adjusts resource allocation by sending indication information to adjust the transmission resource of the first service, allowing the system to adapt to changing traffic conditions and ensure high-priority services meet their delay requirements while maintaining overall resource utilization efficiency.
2Reliability
If transmission resources are reserved for high-priority services, then time delay requirements are met, but overall resource utilization efficiency deteriorates
Solution Approach 1:
The patent makes transmission resources multi-functional by allowing the same resource to serve different services based on priority needs. The indication information mechanism enables a single transmission resource to be dynamically assigned to either high-priority or low-priority services depending on current traffic conditions. This universal resource allocation approach ensures that resources are not permanently reserved but can serve multiple purposes, guaranteeing high-priority service delays while maximizing overall resource utilization efficiency.
3Reliability
If transmission resources are dynamically reallocated, then high-priority service reliability is improved, but system complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism in the form of indication information that mediates between resource allocation and service requirements. The base station uses this indication information to communicate resource allocation decisions to user equipment without requiring complex negotiation or coordination protocols. This intermediary signaling approach simplifies the overall system complexity while enabling dynamic resource reallocation to ensure high-priority service reliability, as the indication information carries all necessary allocation details in a standardized format.
Data Source
AI summary
A data processing method applied to a base station includes: configuring a first transmission resource for a first priority service; when the remaining transmission resources cannot completely bear service data of a second priority service, selecting at least part among the first transmission resource to be configured for a second priority service, the priority of the second priority service being higher than the priority of the first priority service; and sending first downlink control information (DCI), the first DCI being used to indicate the second priority service preempting the transmission resources of the first priority service.