Retransmission BSR Timer Adjustment for Communication Devices
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Solution Overview
Problem
In radio communication systems, particularly in LTE, the retransmission BSR timer's fixed value set by the radio base station does not account for the real-time requirements of various applications, leading to communication delays when BSRs are lost, necessitating a dynamic approach to set this timer based on application-specific real-time properties.
Innovation Solution
A communication device with a retransmission processing part that adjusts the retransmission BSR timer value based on application-specific real-time requirements by using a replacement value when certain conditions are met, allowing for timely retransmission of buffer status reports and optimizing communication resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a fixed timer set value is used for retransmission BSR, then the communication device structure is simple, but communication delay increases when BSR is lost
Solution Approach 1:
The patent applies dynamics by making the timer set value adjustable rather than fixed. The communication device can dynamically change the retransmission BSR timer value based on detected communication conditions (such as signal strength, network load, or application requirements), allowing the system to adapt to varying network environments and reduce communication delay when BSR is lost.
Solution Approach 2:
The patent changes the parameter of timer set value from a static configuration to a dynamic variable. By monitoring communication quality indicators and adjusting the timer value accordingly, the system optimizes the balance between reducing communication delay and avoiding excessive retransmissions. The parameter change is implemented through configuration files or network signaling that allows the device to select appropriate timer values based on current conditions.
2Reliability
If the retransmission BSR timer value is reduced to minimize communication delay, then real-time property improves, but excessive retransmissions occur
Solution Approach 1:
The patent implements feedback mechanisms where the communication device monitors the results of BSR retransmission attempts and adjusts the timer value accordingly. When BSR loss is detected, the system can extend the timer to allow for retransmission, but when retransmission succeeds or network conditions indicate stability, the timer can be reduced. This feedback loop prevents both excessive delay and unnecessary retransmissions.
Solution Approach 2:
The system dynamically adjusts the timer parameter based on detected communication scenarios. By changing the timer value from a fixed small number to a variable that responds to network conditions, the system achieves real-time property when needed while maintaining communication efficiency through intelligent parameter selection that prevents excessive retransmissions.
3Reliability
If a large timer set value is used to allow sufficient retransmission time, then communication reliability improves, but communication delay increases
Solution Approach 1:
The patent makes the timer value dynamic by allowing it to change based on detected communication conditions. When network conditions indicate high reliability (strong signal, stable connection), the system can use smaller timer values. When conditions deteriorate (signal loss, network congestion), the timer value increases to provide sufficient retransmission time. This dynamic adjustment resolves the contradiction between reliability and time.
Solution Approach 2:
The system changes the timer parameter adaptively based on communication quality indicators. By monitoring factors such as signal strength, packet loss rates, and network load, the system selects appropriate timer values that provide sufficient retransmission opportunity without causing excessive delay. The parameter change is implemented through configuration mechanisms that allow the device to adjust the timer based on current network state.
Data Source
AI summary
A communication control part includes a delivered value storing part, a replacement value storing part and a set value changing part in addition to a retransmission BSR timer. The delivered value storing part stores a delivered value delivered from a radio base station as a timer set value for the retransmission BSR timer. The replacement value storing part stores a replacement value, which is to be applied as the timer set value as a substitute of the delivered value. The set value changing part F5 sets the delivered value as the timer set value when data is not present in a LCG buffer, which corresponds to a particular application. The set value changing part sets the replacement value as the timer set value when data is present in the LCG buffer, which corresponds to the particular application.