5G Base Station Downlink Control Channel Beam Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 5G wireless communication systems, existing technologies face challenges in efficiently transmitting downlink control channels, particularly in scenarios with blockages, where beamforming techniques may be less effective.
Innovation Solution
The use of beamforming with multiple transmission beams to configure and transmit downlink control channels, along with corresponding data channels, and feedback mechanisms for acknowledgement, to enhance robustness against blockages and improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If beamforming is used to transmit downlink control channels, then transmission distance and data rates are improved, but the system becomes more vulnerable to blockages
Solution Approach 1:
The patent divides the transmission system into multiple independent beams instead of using a single omnidirectional transmission. Each beam can independently transmit control information, and the system can switch between beams or combine them when blockages occur. This segmentation allows the system to maintain reliability while achieving high data rates through directional beamforming.
Solution Approach 2:
The patent dynamically changes transmission parameters including beam direction, beam width, and transmission power based on channel conditions and blockage detection. By adjusting these parameters in real-time, the system can adapt to blockages and maintain both high data rates and reliability through optimized beamforming configurations.
2Reliability
If multiple transmission beams are used to improve blockage robustness, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent performs beam management activities in advance, including pre-configuring multiple beams, pre-establishing beam switching mechanisms, and pre-determining fallback procedures. This preliminary preparation reduces the complexity of real-time beam management during actual transmission, as the system only needs to activate pre-configured beams rather than dynamically creating and managing complex beam structures on-the-fly.
Solution Approach 2:
The patent implements feedback mechanisms where the receiver provides information about successful beam reception and blockage conditions back to the transmitter. This feedback enables automated beam selection and switching without requiring complex manual control, thereby improving reliability while reducing operational complexity through intelligent automation.
3Power
If beamforming is applied to downlink control channels, then channel gain is improved, but the system becomes more sensitive to misalignment
Solution Approach 1:
The patent incorporates reference signals and pilot beams that are transmitted beforehand to establish accurate beam alignment and provide tolerance for misalignment. These cushioning elements allow the system to compensate for positioning errors and maintain reliable communication even when perfect beam alignment is not achieved, thus preserving channel gain while reducing sensitivity to misalignment.
Solution Approach 2:
The patent employs dynamic beam adjustment capabilities that allow real-time modification of beam direction and orientation based on feedback information. This dynamic adaptation enables the system to correct misalignment issues during transmission, maintaining high channel gain while reducing the impact of initial misalignment through continuous optimization of beam parameters.
Data Source
AI summary
The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long term evolution (LTE). The present disclosure is to transmit a downlink control channel in a wireless communication system. An operation method of a base station comprises the steps of: transmitting information on a configuration of a control channel using a plurality of transmission beams; transmitting control information through the control channel, using the plurality of transmission beams; and transmitting data through a data channel allocated by the control information, using at least one of the plurality of transmission beams.