Control Information Transmission in Mobile Communication Systems
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Solution Overview
Problem
In mobile communication systems, the existing methods delay the transmission of new control information due to the need for acknowledgement (ACK) from the receiver before transmitting updated data, leading to inefficient resource allocation and potential delivery of outdated information.
Innovation Solution
A method where control information is transmitted independently of ACK feedback, using an automatic repeat request scheme to retransmit data blocks until acknowledgement is received, allowing for immediate transmission of updated control information when resources become available, prioritizing logical channels and buffer status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information transmission waits for ACK feedback, then reception reliability is improved, but transmission time is delayed and productivity deteriorates
Solution Approach 1:
The patent applies preliminary action by allowing the transmitter to send updated control information immediately when new data arrives, without waiting for ACK feedback from previous transmissions. This enables the system to proactively update resource allocation information, ensuring that resource changes are reflected promptly while maintaining reliability through the automatic repeat request mechanism for error correction.
2Productivity
If control information is transmitted immediately without ACK requirement, then transmission time is reduced and productivity is improved, but reliability of information delivery may deteriorate
Solution Approach 1:
The patent implements feedback through the automatic repeat request (ARQ) mechanism, where the receiver sends ACK (acknowledgement) or NACK (negative acknowledgement) signals back to the transmitter. This feedback loop ensures reliable delivery of control information while allowing immediate transmission initiation, thus resolving the contradiction between speed and reliability.
3Productivity
If updated control information is transmitted before ACK of previous data, then resource allocation efficiency is improved, but complexity of transmission control increases
Solution Approach 1:
The patent applies dynamics by making the transmission control adaptive to changing conditions. The system dynamically adjusts transmission behavior based on incoming data priority levels and channel status, allowing immediate transmission of high-priority updates while managing complexity through priority-based scheduling and automatic repeat request mechanisms.
Data Source
AI summary
The present invention relates to communicating control information in a mobile communication system, by which new control information can be transmitted more quickly. The present invention comprises transmitting a first data block comprising control information for transmitting first data when no resources for the transmission of the first data are available, receiving second data from an upper layer to be transmitted, wherein the second data has a higher priority than the first data, and transmitting a second data block comprising updated control information for transmitting the first and second data when no resources for the transmission of the first and second data are available.