Transmission Scheduling with Dynamic TRP and RV Modes
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Solution Overview
Problem
Existing communication systems lack effective transmission scheduling methods to support various communication scenario changes, particularly in ultra-reliable low latency communication (URLLC) services, where channel fading conditions vary significantly among multiple transmission reception points (TRPs), leading to reduced transmission quality and reliability.
Innovation Solution
A method and device for transmission scheduling that dynamically adjusts the number of TRPs and redundancy versions (RVs) based on actual transmission conditions, using TRP and RV indication information to switch between different scheduling modes, ensuring improved transmission performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TRPs are used for transmission, then transmission reliability is improved, but channel fading conditions vary significantly among TRPs leading to reduced transmission quality
Solution Approach 1:
The patent implements dynamic switching between single-TRP and multi-TRP transmission modes based on real-time channel conditions. The network device monitors channel quality indicators and dynamically adjusts the number of TRPs and RV configurations, transforming a static transmission system into a dynamic one that adapts to varying channel fading conditions while maintaining transmission reliability.
Solution Approach 2:
The patent changes transmission parameters (number of TRPs, number of RVs, RV offsets) based on channel conditions. By adjusting these parameters dynamically, the system optimizes transmission performance for different channel fading scenarios, resolving the contradiction between maintaining reliability and adapting to varying channel conditions.
2Reliability
If dynamic switching between transmission modes is implemented, then transmission performance is improved, but system complexity increases
Solution Approach 1:
The patent manages complexity by systematically changing a limited set of predefined parameters (TRP count, RV count, RV offsets) rather than implementing complex algorithmic adjustments. The network device selects from predetermined transmission configurations based on channel quality thresholds, simplifying the control logic while maintaining dynamic adaptability and transmission performance.
3Reliability
If channel quality monitoring and mode switching is implemented, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent uses existing uplink control channels (PUCCH, PUSCH) for dual purposes: both for normal uplink data transmission and for feedback of channel quality indicators. This multi-functional use of existing signaling resources enables reliable channel monitoring and dynamic mode switching without requiring dedicated feedback channels, thus avoiding additional signaling overhead.
Data Source
AI summary
Disclosed in embodiments of the present application are a method and device for scheduling transmission, which are used to solve the problem in which there are currently no solutions for transmission scheduling that supports various communication scenario changes. In the embodiments of the present application, a network side device sends a transmission instruction to a terminal device; and the terminal device determines a transmission scheduling mode according to the transmission instruction and performs transmission scheduling. Moreover, after determining that an adjustment condition is satisfied, the network side device determines a new transmission scheduling mode and notifies the terminal device, so that the terminal device performs transmission scheduling by means of the new transmission scheduling mode.