LTE Control Signaling Demodulation Resource Block Segmentation
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Solution Overview
Problem
In LTE and LTE-Advanced systems, the non-continuous control signaling transmission resources limit the use of closed-loop precoding, leading to inefficient resource utilization and waste, especially when fewer users are scheduled, as existing technologies primarily rely on diversity methods that do not fully utilize resources.
Innovation Solution
A method that allows multiple UEs to use different transmission technologies (closed-loop precoding and diversity) on the same Resource Block (RB) by sharing pilot ports and dividing available resources into multiple resource sets, enabling flexible allocation and demodulation of control signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control signaling transmission resources are allocated discontinuously in the first control signaling transmission area, then resource allocation flexibility is improved, but closed-loop precoding technique cannot be implemented and resource utilization efficiency deteriorates
Solution Approach 1:
The patent divides the control signaling transmission area into two distinct parts: the first control signaling transmission area using discontinuous CCE-based resources for backward compatibility, and the second control signaling transmission area using continuous RB-based resources for closed-loop precoding. This segmentation allows each area to optimize for its specific transmission technique without interfering with the other, thus maintaining resource allocation flexibility while enabling efficient closed-loop precoding transmission.
2Productivity
If the second control signaling transmission area is opened to support closed-loop precoding, then control signaling capacity and transmission performance are improved, but system complexity and design difficulty increase
Solution Approach 1:
The patent segments the control signaling transmission into two separate areas with distinct resource allocation mechanisms. The first area maintains the traditional CCE-based discontinuous allocation for diversity transmission, while the second area implements RB-based continuous allocation for closed-loop precoding. This clear segmentation simplifies the overall system design by isolating the complexity of supporting multiple transmission techniques into manageable, independent modules.
Solution Approach 2:
The patent creates a universal control signaling transmission framework that can accommodate both diversity transmission and closed-loop precoding techniques. The second control signaling transmission area is designed with universal RB-based resource allocation that works with closed-loop precoding while maintaining compatibility with the existing first control signaling transmission area, thus supporting multiple transmission modes within a unified system architecture.
3Productivity
If multiple UEs share the same RB for control signaling transmission, then resource utilization is improved, but pilot port conflicts occur when using different transmission technologies
Solution Approach 1:
The patent segments the resource allocation by transmission technology type, assigning UE0 (using diversity) to the first control signaling transmission area with CCE-based resources, and UEs1-3 (using closed-loop precoding) to the second control signaling transmission area with RB-based resources. This spatial and technological segmentation eliminates pilot port conflicts by ensuring that UEs using different transmission technologies operate in separate resource domains, while still achieving high resource utilization through the second area's ability to multiplex multiple closed-loop precoding UEs.
Data Source
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AI summary
The present document discloses control signaling transmission and demodulation method, system and terminal. The control signaling transmission method includes: a base station transmitting control signaling using different transmission technologies on available transmission resources in the second control signaling transmission area in the same RB. With present document, by configuring a pilot frequency port and dividing the transmission resources in the second control signaling transmission area in the RB, the control signaling of a plurality of UEs using different transmission technologies can be transmitted on the available transmission resources in the same RB, thus fully utilizing the transmission resources in the RB, improving resource utilization rate, enhancing control signaling capacity, and supporting the control signaling of more users.