MTC Terminal Transmit Power and Frequency Resource Determination
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Solution Overview
Problem
Current wireless communication systems face challenges in determining optimal frequency resources and transmit power for Machine-Type Communication (MTC) systems that coexist with cellular communication systems, particularly when MTC base stations and cellular base stations interact, and MTC terminals do not perform power control or perform it sporadically.
Innovation Solution
A method and apparatus that determine frequency resources and transmit power for MTC communication by using path loss information between MTC and cellular base stations, allowing MTC terminals to select candidate frequencies and power levels based on distance information to minimize interference and maximize coverage and bandwidth, even when multiple cellular base stations are involved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If MTC terminals transmit uplink signals without proper power control, then device complexity is reduced, but interference with cellular systems increases
Solution Approach 1:
The MTC terminal autonomously determines transmit power and frequency resources based on measured path loss and pre-stored mapping relationships, without requiring complex power control mechanisms or base station scheduling. The terminal self-adjusts transmission parameters to minimize interference while maintaining coverage.
Solution Approach 2:
The patent uses path loss information to dynamically select from multiple candidate frequency resources and power levels. The terminal changes transmission parameters (frequency and power) based on the measured path loss value and predefined mapping relationships, enabling adaptive transmission without complex control mechanisms.
2Quantity of substance
If MTC systems use adjacent bands to cellular systems, then bandwidth availability increases, but interference between systems worsens
Solution Approach 1:
The patent allows MTC terminals to transmit in frequency resources adjacent to cellular bands rather than requiring complete spectral separation. By using partial bandwidth (adjacent bands) and controlling transmit power based on path loss, the system achieves sufficient coverage while limiting interference to acceptable levels.
Solution Approach 2:
The patent introduces path loss information as an intermediary parameter that mediates between the MTC terminal and cellular systems. The terminal uses path loss measurements to determine appropriate transmit power and frequency resources, acting as a mediator that balances coverage requirements with interference avoidance.
3Productivity
If multiple MTC terminals access the network simultaneously, then system productivity increases, but interference management complexity increases
Solution Approach 1:
Each MTC terminal independently determines its own transmit power and frequency resources based on local path loss measurements and pre-stored mapping relationships. This self-service approach enables multiple terminals to access the network simultaneously without requiring centralized interference management or base station coordination.
Solution Approach 2:
The patent segments the frequency spectrum into multiple candidate frequency resources and divides power control into discrete power levels based on path loss ranges. This segmentation allows multiple terminals to be assigned different frequency resources and power levels, enabling simultaneous access while managing interference through resource division rather than complex coordination.
Data Source
AI summary
The present disclosure relates to a communication technique for combining a 5G communication system that supports higher data transmission rates after 4G systems with IoT technology and to the system therefor. The present disclosure can be applied for intelligent services based on 5G communication technology and IoT related technology (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety related services, and the like). A method for determining an uplink transmission resource of a wireless communication system comprises the steps of: obtaining one or more of first distance information between a first base station supporting a first communication system and a terminal supporting the first communication system, and second distance information between a second base station supporting a second communication system and the terminal; and determining a frequency resource and transmission power for uplink signal transmission of the first terminal based on one or more of the obtained first distance information and second distance information.