Dual-Carrier HSUPA Extension Carrier Activation
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Solution Overview
Problem
The existing dual-carrier High Speed Uplink Packet Access (HSUPA) technology faces challenges with battery consumption and control channel overhead, leading to limited operator interest and inefficient uplink capacity utilization.
Innovation Solution
Implementing a dual-carrier HSUPA mechanism with separate uplink power control for each carrier, where the extension carrier is used only when needed, reducing intra-cell interference and eliminating the need for continuous power control information, allowing for improved data rates and reduced overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dual-carrier HSUPA is implemented with continuous power control information, then uplink capacity is improved, but control channel overhead increases and battery consumption increases
Solution Approach 1:
The patent implements periodic power control information transmission instead of continuous transmission. The extension carrier is activated only when needed based on uplink capacity requirements, and power control information is transmitted periodically rather than continuously, thereby reducing control channel overhead while maintaining uplink capacity improvement.
Solution Approach 2:
The patent introduces dynamic carrier activation where the extension carrier is enabled only when uplink capacity is required and disabled when not needed. This dynamic approach allows the system to adapt to varying traffic conditions, improving uplink capacity when necessary while minimizing control channel overhead during low-traffic periods.
2Productivity
If dual-carrier HSUPA is implemented with continuous power control information, then uplink capacity is improved, but battery consumption increases
Solution Approach 1:
The patent implements periodic power control information transmission instead of continuous transmission. The extension carrier is activated only when needed based on uplink capacity requirements, and power control information is transmitted periodically rather than continuously, thereby reducing control channel overhead while maintaining uplink capacity improvement.
Solution Approach 2:
The patent introduces dynamic carrier activation where the extension carrier is enabled only when uplink capacity is required and disabled when not needed. This dynamic approach allows the system to adapt to varying traffic conditions, improving uplink capacity when necessary while minimizing control channel overhead during low-traffic periods.
3Speed
If extension carrier is used continuously, then data rates are improved, but intra-cell interference increases
Solution Approach 1:
The patent introduces dynamic carrier activation where the extension carrier is enabled only when uplink capacity is required and disabled when not needed. This dynamic approach allows the system to adapt to varying traffic conditions, improving uplink capacity when necessary while minimizing control channel overhead during low-traffic periods.
Solution Approach 2:
The patent applies different transmission characteristics to different carriers based on local conditions. The extension carrier is activated only in specific cells and time periods where it is needed, allowing high data rates in locations requiring enhanced capacity while limiting interference propagation to other cells where the extension carrier is not activated.
Data Source
Figure 1
Figure 2~3A
Figure 3B~4
AI summary
A method comprising: sending information relating to at least one parameter with which an apparatus is configured to transmit a signal on an extension carrier in a communication system; and said information being based upon at least one parameter of a primary carrier in the communication system.