Uplink Signaling Waveform Selection for 5G Power Management
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Solution Overview
Problem
In wireless communication networks, managing transmission power effectively is crucial to maintain signal quality without causing interference or draining battery life, particularly in 5G networks where low power leads to poor reliability and high power causes interference.
Innovation Solution
The method involves using different signaling waveforms such as SC-FDMA and OFDMA based on the relative position of frequency resources within the operating frequency range, allowing for higher transmission power at the edges or outer positions, and switching between waveforms to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to improve signal quality, then reliability is improved, but interference increases and battery drains faster
Solution Approach 1:
The patent applies local quality by selecting different waveforms (SC-FDMA vs OFDMA) based on the specific frequency resource position. Edge frequency resources use SC-FDMA for higher power and better coverage, while inner frequency resources use OFDMA for lower interference. This localized waveform selection optimizes each frequency region's characteristics to balance reliability and interference.
Solution Approach 2:
The patent implements dynamics by dynamically switching between SC-FDMA and OFDMA waveforms based on the allocated frequency resource position. The UE and network node adapt the waveform selection in real-time according to scheduling decisions, allowing the system to optimize transmission characteristics for each specific transmission opportunity.
2Reliability
If transmission power is increased to improve signal quality, then reliability is improved, but battery consumption increases
Solution Approach 1:
The patent applies local quality by matching waveform selection to frequency resource position. SC-FDMA is used at edge frequencies where higher power is needed for coverage, while OFDMA is used at inner frequencies where lower power suffices. This localized approach ensures power is only increased where necessary for reliability, minimizing overall battery consumption.
Solution Approach 2:
The patent changes the waveform parameter based on frequency position to optimize power consumption. By transitioning between SC-FDMA and OFDMA waveforms, the system adjusts transmission characteristics to achieve required reliability with minimal power expenditure in each frequency region.
3Length of stationary object
If SC-FDMA waveform is used for higher transmission power, then coverage is improved, but PAPR increases
Solution Approach 1:
The patent applies local quality by restricting SC-FDMA usage to edge frequency resources where coverage extension is the primary goal, while using OFDMA for inner frequency resources where coverage is less critical. This localized application of SC-FDMA limits PAPR impact to specific frequency regions while achieving coverage benefits where needed.
Data Source
AI summary
There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting signaling on frequency resources, the signaling having a signaling waveform based on the relative position of the frequency resources in a frequency range. The disclosure also pertains to related methods and devices.