Uplink Resource Management via Multi-bit A/N Thresholding
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Solution Overview
Problem
In wireless communication systems, particularly in time division duplex (TDD) systems with asymmetrical downlink and uplink processes, there is a challenge in efficiently transmitting multi-bit acknowledgements (A/N) along with other information such as channel quality indicators (CQI), scheduling requests (SR), and sounding reference signals (SRS) within the same sub-frame, due to limited resources and the need for high reliability of ACK/NACK information for HARQ operations.
Innovation Solution
The method involves determining a condition based on the size of the multi-bit A/N and other available information, where if the size exceeds a predetermined threshold, the other information is dropped, and if not, the multi-bit A/N and other information are jointly coded for transmission, ensuring efficient resource management and reliable uplink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-bit A/N and other information are transmitted together in the same sub-frame, then resource utilization is improved, but transmission reliability may be compromised due to resource constraints
Solution Approach 1:
The patent changes the parameter of information prioritization by introducing a threshold mechanism. When the size of multi-bit A/N exceeds the threshold, it is transmitted with higher priority and other information is dropped. When it is below the threshold, other information is transmitted alongside. This dynamic parameter adjustment resolves the contradiction by adapting transmission behavior to current resource conditions.
Solution Approach 2:
The patent implements dynamic resource allocation by making the transmission decision dependent on the actual size of multi-bit A/N data. The system dynamically switches between two transmission modes: dropping other information when A/N size is large, and transmitting both when A/N size is small. This dynamic approach allows the system to optimize both resource utilization and transmission reliability based on real-time conditions.
2Productivity
If the size threshold for multi-bit A/N is set low, then other information can be transmitted more frequently, but the reliability of HARQ operations may be reduced
Solution Approach 1:
The patent uses a configurable threshold parameter to balance transmission frequency and HARQ reliability. The threshold acts as a control parameter that can be adjusted to achieve different operational characteristics. By setting the threshold appropriately, the system ensures that multi-bit A/N transmission is prioritized when necessary for HARQ reliability, while still allowing other information to be transmitted frequently when resources permit.
3Quantity of substance
If the size threshold for multi-bit A/N is set high, then more control information can be transmitted, but resource efficiency may be reduced
Solution Approach 1:
The threshold parameter controls the trade-off between control information volume and resource efficiency. When the threshold is set high, the system allows more control information to be transmitted together, increasing information volume. When the threshold is set low, the system prioritizes resource efficiency by dropping other information more frequently. This parameter-based control enables flexible optimization of the contradiction.
Data Source
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AI summary
Management of uplink resources in a wireless communication is presented. In one embodiment, management of uplink resources comprises receiving a multi-bit acknowledge (multi-bit A/N) that is available for uplink transmission and receiving other information that is available for uplink transmission along with the multi-bit A/N. Next, it is determined whether a condition has been met. If the condition has been met, an uplink message is created comprising the multi-bit A/N but dropping the other information. If the condition has not been met, an uplink message is created which jointly codes the multi-bit A/N and the other information. The uplink message is then transmitted to a receiver.