Predictive Terminal Scheduling for High-Speed State Updates
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Solution Overview
Problem
The inflexible parameter configuration in existing scheduling methods for terminals with fast-moving states, such as vehicles, leads to slow updates of terminal state information, which is not timely enough to accommodate rapid changes in terminal location and speed.
Innovation Solution
A scheduling method that determines configuration information based on the predicted travelling trajectory of a terminal within a predetermined time period, including transmission resources, cycles, and active retransmission locations, to ensure timely updates of terminal state information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed transmission cycle and random resource allocation are used in conventional SPS, then PDCCH resources are saved and scheduling is simplified, but terminal state information cannot be updated timely when terminal moves at high speed
Solution Approach 1:
The patent applies dynamics by making scheduling parameters adjustable based on terminal movement state. The network device determines whether the terminal is in high-speed movement state and dynamically adjusts transmission parameters (such as transmission cycle, resource allocation) accordingly. This resolves the contradiction by enabling timely state information updates through dynamic parameter adaptation while maintaining simplified fixed parameters for stationary or low-speed terminals.
2Adaptability or versatility
If semi-persistent scheduling with fixed cycle is used, then scheduling overhead is reduced, but the system cannot adapt to rapid changes in terminal location and speed
Solution Approach 1:
The patent applies preliminary action by having the network device predict the terminal's future position and movement state based on current trajectory information. This prediction enables proactive adjustment of scheduling parameters before the terminal actually enters a high-speed movement state, ensuring timely adaptation without waiting for state changes to occur. This resolves the contradiction by reducing state information update delay through predictive scheduling adjustments.
3Reliability
If random resource allocation within SPS stage is used, then resource allocation flexibility is maintained, but transmission reliability cannot be guaranteed for high-speed moving terminals
Solution Approach 1:
The patent applies local quality by implementing different resource allocation strategies for different terminal movement states. For high-speed moving terminals, the system uses deterministic resource allocation with predicted positions to ensure transmission reliability. For stationary or low-speed terminals, random resource allocation within SPS stage is maintained to preserve scheduling flexibility. This resolves the contradiction by providing transmission reliability where needed while maintaining overall scheduling efficiency through state-dependent resource allocation.
Data Source
AI summary
Provided is a scheduling method. The method includes: receiving configuration information sent by a server, wherein the configuration information comprises at least one of: a transmission resource, a transmission cycle or an active retransmission location; and sending the configuration information to a terminal. Further disclosed are an information sending method and apparatus.