Wireless Control Channel Positioning for Detection Speed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, user equipment faces challenges in rapidly and correctly detecting control information from multiplexed control channels, leading to increased complexity and power consumption due to varying control information sizes and channel encoding rates among user equipment.
Innovation Solution
A method is introduced where position information is used to search for downlink control channels, allowing user equipment to sequentially search the multiplexed control channel based on received position information, reducing the number of detection attempts and complexity by identifying specific positions for each user's control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blind detection is used to detect control information from multiplexed control channels, then user equipment can find its own control information without prior position information, but the number of detection attempts increases significantly and detection speed decreases
Solution Approach 1:
The base station performs preliminary action by determining and transmitting position information indicating where control information for each user equipment is located within the multiplexed control channel. This allows user equipment to directly jump to the correct position for detection without attempting to decode the entire multiplexed control channel sequentially, thereby reducing detection attempts and improving detection speed while maintaining reliable control information acquisition
2Productivity
If position information is transmitted to indicate control information locations, then detection attempts are reduced and detection speed increases, but transmission overhead increases
Solution Approach 1:
The patent applies parameter changes by transmitting position information in a compact format that efficiently encodes the location of control information within the multiplexed control channel. This optimized parameter representation reduces the amount of overhead data required compared to transmitting full position details, thereby achieving fast detection with minimal transmission overhead
3Productivity
If control information for multiple user equipments is multiplexed in one transmission interval, then bandwidth efficiency improves, but the complexity of decoding control information increases
Solution Approach 1:
The patent applies segmentation by dividing the multiplexed control channel into distinct segments, each containing control information for a specific user equipment at a predetermined position. The base station transmits position information that enables user equipment to identify and decode only its own control information segment without needing to decode the entire multiplexed control channel, thereby reducing decoding complexity while maintaining bandwidth efficiency through multiplexing
Data Source
AI summary
A method of receiving control information in a wireless communication system includes receiving position information for searching at least one downlink control channel, a downlink control channel carrying control information of at least one user equipment, receiving multiplexed downlink control channel in which a plurality of downlink control channels are sequentially multiplexed and sequentially searching the downlink control channel on the multiplexed downlink control channel according to the position information. The number of detection attempts to detect its own control information can be reduced.