Carrier Sensing Bandwidth Segmentation for Control Information
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Solution Overview
Problem
Wireless communication systems face inefficiencies in transmitting control information, particularly in allocating resources for efficient control information transmission.
Innovation Solution
The method involves dividing bandwidth into predetermined frequency units, performing carrier sensing to identify idle bandwidth, and using that bandwidth for transmitting control information, allowing for efficient allocation and transmission of control data between base stations and user equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier sensing is performed on the entire bandwidth, then resource allocation efficiency is improved, but transmission delay increases due to scanning the whole bandwidth
Solution Approach 1:
The patent divides the entire bandwidth into multiple sub-bandwidths (first bandwidth, second bandwidth, third bandwidth, etc.) and performs carrier sensing independently on each sub-bandwidth. This segmentation allows the system to identify idle resources more quickly without scanning the entire bandwidth, thereby reducing transmission delay while maintaining resource allocation efficiency.
2Adaptability or versatility
If multiple sub-bandwidths are monitored for carrier sensing, then resource allocation flexibility is improved, but system complexity increases
Solution Approach 1:
The bandwidth is segmented into multiple sub-bandwidths that can be independently monitored and allocated. Each sub-bandwidth can be assigned to different users or services based on demand, providing flexibility while keeping the complexity of each individual sensing operation manageable.
Solution Approach 2:
The system dynamically selects which sub-bandwidths to monitor and allocate based on current channel conditions and traffic demands. This dynamic approach allows the system to adapt to changing conditions without continuously monitoring all sub-bandwidths, thereby reducing overall system complexity while maintaining flexibility.
Data Source
AI summary
The present invention relates to a wireless communication system and, more particularly, to a method and a device for transmitting control information. The wireless communication system supports carrier aggregation (CA). One aspect of the present invention relates to a method for a base station to receive information from a terminal in a wireless communication system, and comprises the steps of: dividing the entire bandwidth used by one or more serving cells configured in the base station and the terminal, into predetermined frequency units; carrying out a carrier sensing operation for each of the plurality of bandwidths divided in the predetermined frequency units; and when the result of the carrier sensing operation for a first bandwidth from the plurality of divided bandwidths is maintained idle for a predetermined time or longer, transmitting first information to the terminal using the first bandwidth; and receiving from the terminal, second information on a second cell (SCell) related to the first information from the one or more serving cells.