Receiver Frequency Switching Delay Reduction
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Solution Overview
Problem
In wireless communication systems, the receiver's inability to quickly switch frequencies due to the 'no-radio-wave timer' period leads to delayed signal reception when frequency changes are initiated by the transmitter, causing communication errors and reduced operational efficiency.
Innovation Solution
The receiver includes a receiving unit and a communication error acceptance time setting unit that dynamically adjusts the acceptance time for communication errors based on whether a frequency change is determined, allowing for shorter acceptance times when frequency changes are made, thereby reducing the time to receive signals after frequency switching is informed by the transmitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the no-radio-wave timer is started to ignore communication errors, then the receiver can save signals from receiving errors, but the receiver cannot change the standby frequency during the timer period, causing delayed frequency switching
Solution Approach 1:
The patent applies dynamics by making the no-radio-wave timer period variable rather than fixed. The timer period is dynamically adjusted based on whether a frequency change is detected: a first period is used when frequency change is detected, and a second (longer) period is used when no frequency change is detected. This dynamic adjustment allows the system to balance between quick frequency switching and communication error protection.
Solution Approach 2:
The patent changes the parameter of the no-radio-wave timer period based on the detection result. When a frequency change is detected in the received signal, the system sets the timer to a shorter first period, enabling faster frequency switching. When no frequency change is detected, the system uses a longer second period for more robust error protection. This parameter change resolves the contradiction by adapting the timer behavior to operational context.
2Stability of the object's composition
If the no-radio-wave timer uses a fixed period, then the receiver can consistently protect against communication errors, but the receiver cannot quickly adapt to frequency changes initiated by the transmitter
Solution Approach 1:
The system transitions from a static fixed timer period to a dynamic adaptive timer period. The receiving frequency change determining unit detects whether the transmitter has changed frequency, and based on this detection, the no-radio-wave timer is set to appropriate periods. This dynamic behavior enables the system to maintain stability through consistent error protection while adapting quickly to frequency changes when needed.
Solution Approach 2:
The patent implements feedback by having the receiving frequency change determining unit continuously monitor the received signal for frequency change indications. This feedback information is then used to adjust the no-radio-wave timer period appropriately. The feedback loop enables the system to respond to transmitter actions and adjust its error protection strategy accordingly, balancing consistency and adaptability.
3Measurement precision
If the receiver continues to generate no signal indication during communication errors, then communication errors are detected, but the receiver cannot receive signals quickly after frequency switching
Solution Approach 1:
The patent applies dynamics by adjusting the no-radio-wave timer period based on frequency change detection. When a frequency change is detected, the timer is set to a shorter first period, allowing the receiver to quickly transition to the new frequency and reduce signal reception delay. When no frequency change is detected, the timer uses a longer second period to maintain accurate error detection. This dynamic adjustment resolves the contradiction between error detection accuracy and signal reception speed.
Data Source
AI summary
A receiver (200) that receives a radio signal transmitted from a transmitter includes a receiving unit (2042) that receives a signal that is wirelessly transmitted from the transmitter at one of a plurality of transmission frequencies, a receiving frequency change determining unit (2048) that determines whether a receiving frequency is to be changed, based on the signal received by the receiving unit, and a communication error acceptance time setting unit (2046) that sets an acceptance time as a period of time for which communication errors after confirmation of a receiving operation are accepted, based on the signal received by the receiving unit. The communication error acceptance time setting unit sets the acceptance time to different periods of time, depending on whether the receiving frequency change determining unit determines that the receiving frequency is to be changed.