Adaptive RV Parameter Bit Allocation for Wireless Throughput
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Solution Overview
Problem
In wireless communication systems, the existing retransmission control methods are inefficient when dealing with data having low encoding rates, as the RV parameter setting is not effectively utilized, leading to increased signaling overhead and reduced throughput.
Innovation Solution
A wireless communication apparatus that adjusts the number of bits for the retransmission control parameter based on the encoding rate, setting it to zero or reducing it for low encoding rates to minimize resource usage and signaling overhead, thereby improving throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RV parameter setting is used for low encoding rate data, then the retransmission control can be performed, but the signaling overhead increases and throughput decreases
Solution Approach 1:
The patent applies local quality by making the RV parameter bit length adaptive to the encoding rate. Specifically, when the encoding rate is below a threshold (e.g., 1/3), the RV parameter uses fewer bits (e.g., 1 bit) or is omitted entirely, while for higher encoding rates, the full RV parameter (e.g., 2 bits) is used. This localized adaptation optimizes signaling efficiency for different data types without compromising retransmission control capability where needed.
Solution Approach 2:
The patent changes the parameter of RV parameter bit length based on the encoding rate. The base station determines the encoding rate of downlink data and dynamically adjusts the number of bits allocated to the RV parameter in retransmission control signaling. This parameter change ensures that resources are not wasted on excessive signaling for low encoding rate data while maintaining adequate control for high encoding rate data.
2Reliability
If the RV parameter setting is used for low encoding rate data, then the retransmission control can be performed, but the throughput is reduced
Solution Approach 1:
The patent applies local quality by making the RV parameter bit length adaptive to the encoding rate. Specifically, when the encoding rate is below a threshold (e.g., 1/3), the RV parameter uses fewer bits (e.g., 1 bit) or is omitted entirely, while for higher encoding rates, the full RV parameter (e.g., 2 bits) is used. This localized adaptation optimizes signaling efficiency for different data types without compromising retransmission control capability where needed.
Solution Approach 2:
The patent changes the parameter of RV parameter bit length based on the encoding rate. The base station determines the encoding rate of downlink data and dynamically adjusts the number of bits allocated to the RV parameter in retransmission control signaling. This parameter change ensures that resources are not wasted on excessive signaling for low encoding rate data while maintaining adequate control for high encoding rate data.
3Measurement precision
If the number of bits for retransmission control parameter is increased, then the control precision is improved, but the resource usage increases
Solution Approach 1:
The patent applies local quality by making the RV parameter bit length adaptive to the encoding rate. Specifically, when the encoding rate is below a threshold (e.g., 1/3), the RV parameter uses fewer bits (e.g., 1 bit) or is omitted entirely, while for higher encoding rates, the full RV parameter (e.g., 2 bits) is used. This localized adaptation optimizes signaling efficiency for different data types without compromising retransmission control capability where needed.
Solution Approach 2:
The patent changes the parameter of RV parameter bit length based on the encoding rate. The base station determines the encoding rate of downlink data and dynamically adjusts the number of bits allocated to the RV parameter in retransmission control signaling. This parameter change ensures that resources are not wasted on excessive signaling for low encoding rate data while maintaining adequate control for high encoding rate data.
Data Source
AI summary
To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3<R≤2/3, one bit is set. On the other hand, in a case where R≤1/3, zero bits is set.