Terminal Bandwidth Adaptation for 5G Synchronization Power Trade-offs
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Solution Overview
Problem
The 5G wireless communication system faces challenges in supporting various services with different transmission/reception techniques and parameters, requiring efficient time/frequency synchronization and cell search, while also needing to adapt to future communication services without restricting them by current design specifications.
Innovation Solution
A method and apparatus where a base station transmits system information including power information for synchronization signals and broadcast channels, allowing terminals to perform efficient time and frequency synchronization and cell search, with the ability to adjust bandwidth based on commands and report capabilities, and implement slot aggregation for improved data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the terminal operates in a wide bandwidth to support high data transmission rates, then the data transmission rate is improved, but the power consumption increases
Solution Approach 1:
The terminal dynamically adjusts its operating bandwidth based on service requirements. When high data transmission rates are needed, the terminal operates in wide bandwidth. When power saving is prioritized, the terminal switches to narrow bandwidth operation. This dynamic adjustment allows the system to optimize between speed and power consumption based on real-time needs.
Solution Approach 2:
The system changes the bandwidth parameter of the terminal according to different service scenarios. By adjusting this key parameter, the terminal can operate efficiently in wide bandwidth for high-speed services and switch to narrow bandwidth for power-saving modes, thus resolving the contradiction between transmission rate and power consumption.
2Use of energy by moving object
If the terminal operates in a narrow bandwidth to reduce power consumption, then the power consumption is reduced, but the data transmission rate decreases
Solution Approach 1:
The terminal dynamically adjusts its operating bandwidth based on service requirements. When high data transmission rates are needed, the terminal operates in wide bandwidth. When power saving is prioritized, the terminal switches to narrow bandwidth operation. This dynamic adjustment allows the system to optimize between speed and power consumption based on real-time needs.
Solution Approach 2:
The system changes the bandwidth parameter of the terminal according to different service scenarios. By adjusting this key parameter, the terminal can operate efficiently in wide bandwidth for high-speed services and switch to narrow bandwidth for power-saving modes, thus resolving the contradiction between transmission rate and power consumption.
3Adaptability or versatility
If the system supports multiple services with different transmission parameters in one system, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The base station implements a universal synchronization signal transmission mechanism that serves multiple services simultaneously. By transmitting synchronization signals with unified power information indication, the system can support various services (eMBB, URLLC, mMTC) without requiring separate synchronization mechanisms for each service, thus reducing overall system complexity while maintaining high adaptability.
Solution Approach 2:
The base station transmits power information for synchronization signals in advance through system information or dedicated signaling. This preliminary provision of power information allows terminals to perform accurate synchronization and bandwidth adjustment before actual data transmission begins, enabling efficient support for multiple service types without increasing system complexity.
4Reliability
If the base station transmits synchronization signals with high power to ensure reliable synchronization, then the reliability is improved, but the power consumption of the base station increases
Solution Approach 1:
The base station transmits power information indicating the actual power level of synchronization signals to terminals. This feedback mechanism allows terminals to understand the transmission power and adjust their reception and synchronization parameters accordingly, ensuring reliable synchronization while allowing the base station to optimize its power consumption by transmitting at appropriate power levels rather than always using maximum power.
Solution Approach 2:
The system changes the transmission power parameter of synchronization signals based on channel conditions and service requirements. By dynamically adjusting this parameter and informing terminals through power information indication, the system maintains synchronization reliability while optimizing base station power consumption.
Data Source
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AI summary
A communication technique and system for converging, with Internet of things (IoT) technology, a 5th generation (5G) communication system for supporting a higher data transmission rate beyond a 4th generation (4G) system is provided. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cards, health care, digital education, retail business, security and safety related services, etc.), on the basis of the 5G communication technology and IoT associated technology. According to an embodiment, a method of a terminal in a wireless communication system is provided. The method includes receiving system information, identifying power information for a synchronization signal and a broadcast channel, based on the system information, and transmitting and receiving a signal, based on the power information. In this method, the power information for the synchronization signal and the broadcast channel are set equally.