Dynamic Carrier Activation for Wireless Power Efficiency
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Solution Overview
Problem
In wireless communication systems, the use of multiple carriers for broadband data transmission leads to excessive power consumption and reduced resource efficiency due to the constant activation of all carriers, even when a low service request level is sufficient, resulting in unnecessary load on the RF front-end.
Innovation Solution
Implementing a multi-level management method where mobile stations receive information on available carriers from a base station, transmit capability data, and activate or inactivate carriers based on quality of service (QoS) requirements or load conditions, using a primary carrier for continuous operation and secondary carriers as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple carriers are always used to support broadband transmission, then transmission capacity is improved, but power consumption increases excessively
Solution Approach 1:
The patent implements dynamic carrier activation and deactivation based on service request levels. The mobile station and base station negotiate to determine which carriers should be active at any given time, allowing the system to adapt the number of active carriers to current transmission needs rather than maintaining all carriers in a static active state.
Solution Approach 2:
The patent applies partial action by activating only the necessary number of carriers required for the current service level rather than all available carriers. When low data rate service is sufficient, only one carrier remains active while others are deactivated, providing just enough transmission capacity without excessive resource allocation.
2Reliability
If all carriers are always activated to ensure service availability, then service reliability is improved, but resource efficiency decreases
Solution Approach 1:
The system dynamically adjusts carrier activation status based on real-time service requirements and channel conditions. The base station and mobile station exchange messages to negotiate and update the set of active carriers, ensuring that sufficient carriers remain active to maintain service reliability while avoiding unnecessary activation of excess carriers.
Solution Approach 2:
The patent changes the operational parameters of carriers by transitioning them between active and inactive states. This parameter change allows the system to maintain service reliability through selective carrier activation while improving resource efficiency by keeping unused carriers in a low-power inactive state rather than continuously allocating all carriers.
3Area of stationary object
If multiple carriers are continuously used to support high bandwidth, then transmission bandwidth is improved, but RF front-end load increases unnecessarily
Solution Approach 1:
The patent implements partial action by activating only the minimum number of carriers needed for the current service requirement. When high bandwidth is not needed, fewer carriers are activated, reducing the RF front-end processing load to match actual transmission demands rather than maintaining maximum capacity continuously.
Solution Approach 2:
The system dynamically adjusts the number of active carriers based on service request levels and channel conditions. The base station controls which carriers are activated and can update this configuration over time, allowing the RF front-end load to adapt dynamically to actual transmission needs rather than operating at maximum capacity continuously.
Data Source
AI summary
A method and apparatus for communication using multiple carriers is provided. A mobile station receives information regarding at least one assigned carrier selected from the available carriers based on the multiple carrier capability from a base station. The mobile station activates or inactivates the at least one assigned carrier by receiving a message comprising information indicating activation or inactivation of the at least one assigned carrier from the base station. Signaling overhead for managing multiple carriers may be reduced.