Wireless Resource Selection for Energy-Harvesting Terminal Coverage
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Solution Overview
Problem
In wireless communication systems, determining appropriate transmission resources for terminal devices is challenging due to varying power storage and coverage conditions among different devices, particularly for zero-power terminals that rely on radio frequency power harvesting.
Innovation Solution
A method for wireless communication that considers power storage and coverage information to select suitable transmission resources, using a mapping relationship between these factors and available transmission resources, such as PRACH and PUSCH resources, to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission resources are allocated without considering power storage and coverage information, then resource allocation is simple and fast, but transmission success rate decreases and resource waste increases
Solution Approach 1:
The network device pre-configures mapping relationships between power storage related information/coverage information and transmission resources. The terminal device performs preliminary determination of transmission resources based on its current power storage and coverage conditions, avoiding complex real-time allocation decisions and improving transmission success rate through advance preparation.
Solution Approach 2:
The terminal device autonomously determines its own transmission resources by evaluating its power storage related information and coverage information against pre-configured mapping relationships. This self-service mechanism eliminates the need for complex network-side allocation decisions, reducing overall system complexity while improving transmission reliability.
2Use of energy by moving object
If transmission resources are selected without considering power storage conditions, then resource selection is straightforward, but power consumption increases and energy is wasted
Solution Approach 1:
The terminal device changes its resource selection behavior based on power storage related information parameters. When power storage is sufficient, higher power consumption resources can be selected for faster transmission. When power storage is limited, lower power consumption resources are selected to extend operation, optimizing energy efficiency without overly complicating the selection process through pre-configured mapping relationships.
3Reliability
If uniform transmission resources are allocated to all terminal devices, then allocation process is simple, but transmission reliability decreases for devices with different coverage conditions
Solution Approach 1:
Different transmission resources are allocated based on local conditions of each terminal device, specifically its coverage information. Terminal devices in different coverage areas (e.g., cell center vs. cell edge) receive appropriately tailored resources, improving transmission reliability for each local condition while maintaining manageable system complexity through pre-configured mapping relationships.
Data Source
AI summary
Provided are a method for wireless communication, and a terminal device and a network device. The method includes: a terminal device determining a first transmission resource among one or more transmission resources according to first information, where the first information includes one or more pieces of the following information: energy storage related information of the terminal device, and coverage information of the terminal device. In the embodiments of the present application, energy storage related information and/or coverage information of a terminal device is taken into consideration when determining a transmission resource, which is conducive to the terminal device selecting a more suitable transmission resource.