Dynamic Carrier Activation for Power Saving in Multi-Carrier Systems
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Solution Overview
Problem
In multi-carrier communication systems, terminals consume unnecessary power as all RF modules are activated for allocated carriers regardless of data traffic, leading to resource consumption issues due to the allocation of CQI channels to carriers with no data traffic.
Innovation Solution
A method and apparatus that dynamically activate and deactivate carriers based on data traffic by using indication messages to manage carrier states, allowing only necessary carriers to be active, thereby reducing power consumption and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all RF modules are activated for all allocated carriers in a multi-carrier system, then high-capacity and high-speed data transmission is achieved, but power consumption increases significantly
Solution Approach 1:
The patent implements dynamic carrier activation and deactivation based on data traffic conditions. The base station determines whether data traffic exists for each allocated carrier and sends indication messages to the terminal to activate only the necessary RF modules. This dynamic adjustment allows the system to maintain high data transmission rates when needed while reducing power consumption during low-traffic periods.
Solution Approach 2:
The patent applies local quality by treating each carrier independently regarding RF module activation. Instead of uniformly activating all RF modules for all carriers, the system selectively activates RF modules only for carriers where data traffic is detected. This localized approach ensures that power consumption is optimized without compromising the data transmission capability on active carriers.
2Reliability
If CQI channels are allocated for all carriers regardless of data traffic, then channel quality monitoring is comprehensive, but resource consumption increases
Solution Approach 1:
The patent implements local quality by allocating CQI channels selectively based on data traffic conditions for each carrier. The base station determines whether data traffic exists for each allocated carrier and allocates CQI channels only to carriers where data traffic is present. This ensures that channel quality monitoring is maintained for active carriers while avoiding unnecessary resource consumption on inactive carriers.
Data Source
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AI summary
The present invention relates to a multi-carrier resource utilization method and apparatus for power saving in a communication system using a multi-carrier, in which the activation of a secondary carrier for transmitting and receiving data traffic between a terminal and a base station is determined according to the QoS (Quality of Service) requirements such as a data traffic status between the terminal and the base station, a maximum sustained traffic rate, a maximum traffic burst size, or the like, and an indication message (Indication) indicating this is transferred to the terminal through a primary carrier to transmit and receive data traffic through the activated secondary carrier.