Uplink Signal Multiplexing Via PUCCH Dropping for Bundled PUSCH
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Solution Overview
Problem
The simultaneous transmission of uplink control information and data in mobile communication systems, particularly in subframe bundling mode, leads to degradation of data performance and potential transmission delays.
Innovation Solution
A method for transmitting uplink signals that involves dropping periodic control information and multiplexing other signals when operating in subframe bundling mode, and transmitting these multiplexed signals on the Physical Uplink Shared Channel (PUSCH), while ensuring ACK/NACK information is inserted by puncturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic control information is transmitted simultaneously with uplink data in subframe bundling mode, then control information delivery is ensured, but data performance degrades and transmission delays occur
Solution Approach 1:
The patent extracts periodic control information from the simultaneous transmission stream and handles it separately. When uplink data transmission is detected in subframe bundling mode, the periodic control information transmission is dropped or delayed to a non-bundled subframe, preventing interference with data transmission while ensuring control information is eventually delivered
Solution Approach 2:
The patent implements dynamic adjustment of control information transmission timing based on the detection of uplink data transmission status. The system dynamically decides whether to transmit, drop, or delay periodic control information based on whether the current subframe is configured for uplink data transmission, optimizing the balance between control delivery and data performance
2Reliability
If periodic control information is transmitted on PUCCH during subframe bundling, then control signaling is maintained, but single-carrier characteristics are compromised
Solution Approach 1:
The patent separates periodic control information transmission from the bundled uplink data transmission by dropping the control information in PUCCH when uplink data transmission is detected. This extraction prevents the multi-carrier nature of simultaneous PUCCH and PUSCH transmissions, maintaining single-carrier characteristics while preserving control signaling through alternative timing
Solution Approach 2:
The patent maintains periodic control information delivery by scheduling it in non-bundled subframes or subframes without uplink data transmission. This periodic action ensures control signaling is maintained at appropriate intervals without compromising the single-carrier characteristics during bundled transmission periods
Data Source
AI summary
A method of transmitting uplink signals is disclosed. The method includes transmitting, by a user equipment, periodic control information on a Physical Uplink Control Channel (PUCCH) at a predetermined period, dropping the periodic control information and multiplexing uplink signals except the periodic control information when the user equipment is operating in subframe bundling transmission mode where the uplink signals are transmitted in a plurality of consecutive subframes, and transmitting the multiplexed uplink signals on a Physical Uplink Shared Channel (PUSCH).