Base Station DTX Mode Synchronization with Terminal DRX Cycles
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Solution Overview
Problem
Power consumption in mobile communication technologies is a significant bottleneck, particularly in Femto cell environments where continuous transmission of pilot and broadcast information leads to high energy usage and interference with neighboring cells.
Innovation Solution
Implementing a discontinuous transmission (DTX) mode in base stations, where DTX parameters are determined based on the discontinuous reception (DRX) parameters of terminals, allowing the base station to periodically send pilot and broadcast information and enter a sleep mode when all terminals are in the DRX sleep state, thereby saving power and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station continuously transmits pilot and broadcast information, then the terminal can always receive service data, but power consumption increases and interference to neighboring cells occurs
Solution Approach 1:
The base station transmits pilot and broadcast information periodically according to the DTX parameter, which is determined based on the terminal's DRX parameter. This periodic transmission allows the terminal to receive necessary information during its DRX receiving state while enabling the base station to enter sleep mode during DRX sleep periods, thus reducing power consumption and avoiding continuous interference to neighboring cells.
2Loss of information
If the base station continuously transmits pilot and broadcast information, then information availability is maintained, but interference to neighboring cells increases
Solution Approach 1:
The base station transmits pilot and broadcast information periodically according to the DTX parameter synchronized with the terminal's DRX cycle. This ensures information is available when the terminal needs it (during DRX receiving state) while eliminating continuous transmission that would cause interference to neighboring cells during the base station's sleep periods.
3Use of energy by moving object
If the base station enters sleep mode to save power, then energy efficiency improves, but information transmission to terminals is disrupted
Solution Approach 1:
The base station enters sleep mode during the terminal's DRX sleep period when no information transmission is needed, and wakes up to transmit pilot and broadcast information during the terminal's DRX receiving state. This periodic synchronization ensures power savings during sleep periods while maintaining reliable information transmission when the terminal is active and able to receive data.
Data Source
AI summary
The present invention relates to mobile communication technologies, and in particular, to a method, base station and system for sending information. The method includes: obtaining discontinuous reception (DRX) parameter of a terminal; determining discontinuous transmission (DTX) parameter of the base station according to the DRX parameter; and sending pilot and broadcast information periodically according to the DTX parameter. The technical solution under the present invention saves time-frequency resources, reduces interference on neighboring cells, and saves electric power.