Mobile Terminal Synchronizes Downlink Quality and Uplink Pilot Signals
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Solution Overview
Problem
In mobile communication systems, the independent setting of transmission timing and carrier frequency for downlink quality information and uplink pilot signals increases power consumption and processing complexity in mobile user terminals due to unnecessary amplifier circuit energization and frequency changes.
Innovation Solution
Synchronizing the transmission times of downlink quality information and uplink pilot signals, and using the same or adjacent carrier frequencies for both, reduces the energization time of the amplifier circuit and simplifies bias control, thereby reducing power consumption and processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transmission timing and carrier frequency of downlink quality information and uplink pilot signal are set independently, then the flexibility of transmission scheduling is improved, but the power consumption and processing complexity of the mobile user terminal increase
Solution Approach 1:
The patent combines the transmission timing of downlink quality information and uplink pilot signal into a synchronized schedule, and uses the same or adjacent carrier frequencies for both signals. This merging approach allows the mobile user terminal to keep the amplifier circuit energized continuously for both transmissions, avoiding the need to power it off and on repeatedly, thereby reducing power consumption while maintaining scheduling flexibility
2Adaptability or versatility
If the transmission timing and carrier frequency of downlink quality information and uplink pilot signal are set independently, then the transmission scheduling flexibility is improved, but the processing complexity of the mobile user terminal increases
Solution Approach 1:
The patent merges the frequency settings for downlink quality information and uplink pilot signal transmissions, using the same or adjacent carrier frequencies. This reduces the number of frequency changes required and simplifies the bias control settings for the amplifier circuit, thereby reducing processing complexity while preserving the ability to schedule transmissions flexibly
3Ease of operation
If the amplifier circuit is energized frequently for separate transmissions, then the transmission timing flexibility is improved, but the power consumption increases
Solution Approach 1:
The patent applies preliminary action by synchronizing the transmission timing of downlink quality information and uplink pilot signal in advance, and setting the carrier frequencies to be the same or adjacent beforehand. This allows the amplifier circuit to remain in a ready state without frequent on/off cycling, reducing energy loss from repeated energization while maintaining operational flexibility
Data Source
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AI summary
A mobile user terminal (UE), which measures downlink channel quality, and which transmits downlink quality information, indicating the measured downlink channel quality and an uplink pilot signal to be used for measuring uplink channel quality to a base station (BS), comprises a transmit time control unit (216), which synchronizes transmit time of the downlink quality information and transmit time of the uplink pilot signal relative to each other. And/or the mobile user terminal (UE) comprises a radio transmitting unit (212) which transmits the downlink quality information and the uplink pilot signal by using the same carrier frequency or by using adjacent carrier frequencies selected from among a plurality of preassigned carrier frequencies.