Control Channel Configuration for UE Detection Complexity Reduction
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Solution Overview
Problem
In existing communications systems, user equipment (UE) experiences high detection complexity when receiving control channels due to the need for blind detection of all possible configuration information, leading to increased power consumption and complexity.
Innovation Solution
The method involves determining and transmitting control channel configuration information to the UE, allowing it to directly receive control channels based on pre-defined configuration, thereby reducing the complexity of blind detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs blind detection on all received configuration information to determine control channel configuration, then the UE can obtain the control channel configuration information, but the detection complexity of the UE is greatly increased
Solution Approach 1:
The network side device performs preliminary action by determining the control channel configuration information in advance based on UE capability information and system parameters, then delivers this pre-determined configuration to the UE. This eliminates the need for the UE to perform blind detection on all possible configurations, significantly reducing detection complexity while ensuring reliable control channel reception.
2Reliability
If the UE performs blind detection on all received configuration information, then the control channel can be received, but the power consumption of the UE increases
Solution Approach 1:
The network side device determines and delivers the control channel configuration information to the UE in advance, based on UE capability information and system parameters. This preliminary determination allows the UE to directly use the provided configuration without performing power-consuming blind detection across all possible configurations, thereby reducing UE power consumption while ensuring reliable control channel reception.
3Reliability
If the network side device delivers all possible configuration information to the UE, then the UE can find the correct configuration through blind detection, but the transmission overhead increases
Solution Approach 1:
The network side device extracts and delivers only the specific control channel configuration information that is appropriate for the UE, based on UE capability information and system parameters. Instead of delivering all possible configuration information, the network extracts and transmits only the relevant configuration, reducing transmission overhead while ensuring the UE receives the correct configuration for control channel reception.
Data Source
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AI summary
The present invention discloses a control channel transmission method and apparatus, and a communications node. The method includes: sending a first message to user equipment UE, where the first message includes a set of control channel configuration information; determining, for the user equipment UE according to the set of control channel configuration information, control channel configuration information used to transmit a control channel; and transmitting the control channel according to the control channel configuration information that is determined for the UE and used to transmit the control channel. The control channel configuration information used to transmit the control channel may be determined for the user equipment, and the control channel is transmitted (that is, received or sent) according to the control channel configuration information. Therefore, when transmitting the control channel, the UE can directly transmit a control channel corresponding to the control channel configuration information. In this way, detection complexity of the UE is reduced.