LTE Control Channel Pre-allocation Reducing Blind Detection
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Solution Overview
Problem
Current LTE system designs for control channel transmission face inefficiencies, including unnecessary blind detections, resource wastage, and channel resource conflicts, particularly in paging control channels, ACK/NACK channels, and scheduling channels, due to inadequate consideration of channel properties and resource allocation strategies.
Innovation Solution
A method for transmitting control channels using pre-allocated resources, where the transmitting end specifies detailed physical resource locations based on predetermined criteria, optimizing resource utilization by dynamically or semi-statically configuring the number and location of scheduling channels, ACK/NACK channels, and paging control channels, thereby reducing blind detections and resource conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If control channels use dynamic resource allocation, then resource utilization flexibility is improved, but blind detections and resource conflicts increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring control channel resources before actual transmission. The eNodeB and UE establish predetermined resource locations for paging control channels, ACK/NACK channels, and scheduling channels in advance. This allows the receiving end to directly access pre-configured resources without performing blind detections, thereby reducing complexity while maintaining flexible resource allocation through subsequent dynamic adjustments.
2Device complexity
If control channel resources are pre-allocated, then blind detections are reduced, but resource allocation efficiency decreases
Solution Approach 1:
The patent implements dynamics by combining pre-allocation with dynamic adjustment mechanisms. While control channel resources are initially pre-configured to eliminate blind detections, the system allows dynamic modification of these allocations based on actual traffic conditions. The eNodeB can adjust the number and locations of control channels semi-statically or dynamically, ensuring both reduced complexity and maintained allocation efficiency.
Solution Approach 2:
The patent applies parameter changes by allowing the system to modify control channel resource parameters (such as the number of channels, their locations, and time-frequency allocations) based on network conditions. This enables the pre-allocated resources to be adaptively adjusted without requiring full re-allocation, thus maintaining efficiency while preserving the benefits of pre-configuration.
3Reliability
If control channel locations are fixed, then resource conflicts are reduced, but resource utilization flexibility is lost
Solution Approach 1:
The patent applies preliminary action by pre-configuring control channel locations to avoid conflicts. The eNodeB and UE establish predetermined resource locations for different control channels (paging, ACK/NACK, scheduling) before transmission occurs. This pre-configuration ensures that control channels do not conflict with each other or with data channels, while still allowing flexible allocation through subsequent dynamic adjustments when needed.
Data Source
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AI summary
The method for an eNodeB transmitting control channels with pre-allocated resources comprising steps of the eNodeB determining whether to transmit the control channels according to its needs; the eNodeB transmitting the control channels with pre-allocated resources according to properties of the signaling to be transmitted. With the method proposed, operations in a receiving end are simplified so that the time spent in receiving signaling is shortened and power consumption is well reduced.