Adaptive Scheduling for Wireless Terminals
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Solution Overview
Problem
Existing communication systems face challenges in maintaining accurate scheduling when terminal devices experience high-speed movement or drastic signal changes, leading to mismatches in coding and modulation methods, resulting in high bit error rates.
Innovation Solution
A method and network device that determine scheduling information type by evaluating signal situation and movement state of terminal devices within a sliding time window, switching between cross-slot and within-slot scheduling to align with current conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cross-slot scheduling is used for terminal devices, then scheduling simplicity and processing efficiency are improved, but scheduling accuracy deteriorates when terminal devices experience high-speed movement or drastic signal changes
Solution Approach 1:
The system dynamically switches between cross-slot scheduling and within-slot scheduling based on terminal device status. The network device determines the scheduling information type by obtaining indicators reflecting signal situation and movement state, then selects the appropriate scheduling method accordingly, making the scheduling system adaptive rather than static
Solution Approach 2:
The system changes the scheduling parameter (time slot allocation) based on terminal device conditions. When signal indicators show drastic changes or high-speed movement is detected, the system switches from cross-slot to within-slot scheduling, adjusting the scheduling parameter to match the current communication conditions
2Reliability
If within-slot scheduling is used to improve scheduling accuracy for high-speed moving terminals, then bit error rate is reduced, but scheduling complexity and processing overhead increase
Solution Approach 1:
The system applies different scheduling qualities to different terminal devices based on their individual status. Not all terminals require within-slot scheduling - only those with drastic signal changes or high-speed movement do. Terminals with stable connections continue using cross-slot scheduling, achieving localized optimization without system-wide complexity increase
Solution Approach 2:
The network device continuously obtains indicators reflecting signal situation and movement state as feedback, using this information to determine when to switch scheduling methods. This feedback mechanism ensures within-slot scheduling is applied only when necessary, avoiding unnecessary processing complexity for terminals that don't require it
Data Source
AI summary
A method and a network device for determining the type of scheduling information. The method is performed by a network device and includes: obtaining at least one of indicators reflecting a signal situation of a terminal device within a sliding time window, and a movement state of the terminal device; and determining the scheduling information type according to the at least one of the indicators reflecting the signal situation within the sliding time window and the movement state of the terminal device; wherein the scheduling information type is either cross-slot scheduling or within-slot scheduling.