Wireless Relay HARQ Timing Configuration
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Solution Overview
Problem
Conventional wireless relay communication systems face inefficiencies due to dynamic allocation of indication signals, leading to increased control signaling overhead and reduced operation efficiency.
Innovation Solution
A transmission method for a wireless relay system that employs configured timing associations between grant signal, data transmission, and feedback signal processes between base stations, relay nodes, and mobile devices, operating in either FDD or TDD modes to reduce control signaling overhead and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic allocation of indication signals is used in wireless relay communication systems, then system adaptability is improved, but control signaling overhead increases and operation efficiency decreases
Solution Approach 1:
The patent segments the HARQ timing into distinct phases: base station to relay node timing (K1 subframes), relay node processing time (K2 subframes), and relay node to UE timing (K3 subframes). This segmentation allows each segment to be optimized independently, reducing overall control signaling overhead while maintaining adaptability through configurable parameters.
Solution Approach 2:
The patent introduces configurable timing parameters (K1, K2, K3) that can be adjusted based on system conditions, relay node capabilities, and traffic requirements. By changing these parameters dynamically, the system maintains adaptability while optimizing control signaling overhead for different operational scenarios.
2Adaptability or versatility
If dynamic allocation of indication signals is used in wireless relay communication systems, then system adaptability is improved, but operation efficiency decreases
Solution Approach 1:
The patent establishes preliminary timing associations between base station grant signals and relay node data transmissions through configured timing relationships. The relay node is pre-configured with timing parameters that allow it to automatically determine when to transmit received data to UEs, eliminating the need for dynamic allocation signals and improving operational efficiency.
Solution Approach 2:
The patent implements feedback mechanisms where the base station configures timing parameters based on relay node capabilities and system conditions, and the relay node provides feedback on its timing requirements. This feedback loop enables the system to maintain adaptability while optimizing operation efficiency through informed parameter selection.
3Loss of time
If configured timing associations are established for HARQ processes, then transmission delay is reduced and operational efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the timing control functions into a unified configuration mechanism where the base station provides comprehensive timing parameters (K1, K2, K3) that govern multiple aspects of the HARQ process. This merging reduces the need for separate control signals and simplifies the overall system architecture while reducing transmission delay.
Solution Approach 2:
The relay node uses the configured timing parameters to autonomously determine its transmission timing without requiring continuous base station control signals. The relay node self-manages its HARQ process timing based on the pre-configured parameters, reducing device complexity while maintaining low transmission delay.
Data Source
AI summary
A transmission method for a wireless relay system and a relay station using the same are provided. The wireless relay system includes at least a base station (eNB), at least a relay node (RN) and at least a user equipment (UE). The eNB is facilitated by the RN to provide a data transmission service to the UE. Besides, there are pre-configured timing relationships between at least a grant signalling transmission process, at least a data transmission process and at least a feedback signal transmission process of HARQ processes between the eNB, the RN and the UE.