LTE-A Uplink Control Data Multiplexing Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in optimizing network coverage and service quality, particularly in efficiently managing concurrent transmission of control and data signals in LTE-A uplink, where existing methods do not effectively decouple control and data transmissions, leading to suboptimal resource utilization and interference.
Innovation Solution
The method involves determining a multiplexing mode for wireless communications, identifying separate sets of carriers for data and control signals, and dynamically or semi-statically configuring user equipment (UE) to transmit these signals, allowing for flexible multiplexing or decoupling of control and data transmissions based on channel conditions, thereby optimizing resource allocation and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If concurrent transmission of PUCCH and PUSCH is employed in LTE-A uplink, then network coverage and service quality can be optimized, but resource utilization becomes suboptimal and interference increases
Solution Approach 1:
The patent segments the uplink transmission by separating control signals (PUCCH) and data signals (PUSCH) onto different component carriers. The UE is configured to transmit control information on one set of component carriers while data is transmitted on another set of component carriers, thereby avoiding the resource conflicts and interference that occur when both are transmitted concurrently on the same carrier.
2Device complexity
If control and data signals are transmitted on the same carriers, then resource allocation is simplified, but interference between control and data transmissions increases
Solution Approach 1:
The patent applies segmentation by dividing the component carriers into distinct sets: one set dedicated for control signal transmission and another set for data signal transmission. This spatial separation in the frequency domain eliminates the interference between control and data signals while maintaining relatively simple resource allocation through configured carrier sets.
Data Source
AI summary
Systems and methods are disclosed for control-data multiplexing as well as control-data decoupling. In one embodiment, a semi-static approach is disclosed, wherein the upper layer(s) are configured such that each user equipment uses either control-data multiplexing or control-data decoupling. Additionally or alternatively, a dynamic approach is disclosed, in which one bit is added to the DCI format which indicates whether the UE is using control-data multiplexing or control-data coupling.