UE Buffer State Signaling for Wireless Communication
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Solution Overview
Problem
In wireless communication systems, non-terrestrial network base stations experience higher Round Trip Time (RTT) compared to terrestrial stations, leading to increased buffer demands for user equipment (UE) in HARQ-Less transmission methods, which compromises reception performance and spectrum efficiency.
Innovation Solution
The UE transmits specific information indicating its buffer occupation and channel decoding state to the base station, allowing for dynamic switching between HARQ-Less and HARQ-based methods based on buffer status and RTT, optimizing reception performance and spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If HARQ-Less transmission method is used to save buffer capacity at UE side, then buffer consumption is reduced, but reception performance deteriorates
Solution Approach 1:
The patent applies dynamics by enabling the transmission method to switch between HARQ-Less and HARQ-based approaches based on real-time buffer occupation status. The system dynamically adapts the transmission mode according to UE buffer conditions, allowing optimal performance under varying network and device states rather than being fixed to one method
Solution Approach 2:
The patent changes the operational parameter of transmission method selection based on buffer occupation threshold conditions. When buffer occupation exceeds a threshold, the system switches to HARQ-based transmission; otherwise, it uses HARQ-Less transmission, thereby optimizing the balance between buffer consumption and reception performance through parameter adjustment
2Productivity
If all slots in RTT are used for data transmission to improve spectrum efficiency, then spectrum efficiency is improved, but buffer capacity demand becomes extremely high
Solution Approach 1:
The patent implements feedback mechanisms where the UE reports its buffer occupation status to the base station, which then uses this information to determine the appropriate transmission method. This feedback loop enables the system to adjust transmission parameters dynamically, preventing excessive buffer demands while maintaining high spectrum efficiency through optimized resource allocation
Data Source
AI summary
The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives a first signaling and a first radio signal, and transmits first information; only X1 bit(s) in a first bit block is(are) used for generating the first radio signal, the first bit block is obtained as an output of channel coding of a first code block; the first signaling is used for determining that the X1 bit(s) cannot be used for decoding of the first code block with combining when channel decoding for the X1 bit(s) fails. Through the design of the first information, the disclosure implements the update of a state of buffer occupation of the UE or a state of channel decoding, to facilitate a base station to adjust a transmission policy in real time, thereby improving overall performances.