Method and apparatus for transmitting or receiving signal

By employing signal transmission schemes with different frequencies and time periods in AIoT terminals, and combining the computing power and energy supply of base stations, the frequency hopping frequency and frequency interval are dynamically adjusted, thus solving the problem of limited signal coverage of AIoT terminals and achieving the expansion of signal coverage and the improvement of demodulation performance.

WO2026138385A1PCT designated stage Publication Date: 2026-07-02HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
HUAWEI TECH CO LTD
Filing Date
2025-12-01
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Due to the low energy density and conversion efficiency of ambient energy, AIoT terminals emit low-power wireless signals with limited coverage. Expanding the signal coverage of AIoT terminals is a problem that needs to be solved.

Method used

By transmitting signals at different frequencies at different times and inserting additional DMRS when channel conditions permit, the frequency hopping frequency and frequency interval can be dynamically adjusted in combination with the base station's computing power and energy supply to adapt to different channel conditions, thereby improving signal coverage and demodulation performance.

Benefits of technology

It effectively expands the signal coverage of AIoT terminals, improves signal demodulation performance, reduces power consumption caused by frequency hopping, and reduces frequency domain resource waste and mutual interference.

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Abstract

The present application relates to the field of communications, and specifically to a method and apparatus for transmitting or receiving a signal. The electrical energy that can be used by an AIoT terminal is limited, and therefore, the power of a wireless signal transmitted by the AIoT terminal is typically low. The low-power wireless signal and factors such as channel fading result in the limited signal coverage range of the AIoT terminal. In a frequency hopping solution provided by the present application, the length T of a frequency hopping time period is associated with the density D of a DMRS, so that different channel conditions can be flexibly adapted while the signal coverage range is expanded. In addition, a frequency hopping frequency is determined on the basis of a frequency hopping interval F and an integer f(j) associated with a cell identifier. In this way, it is ensured that a frequency interval between two adjacent frequency hopping transmissions is greater than or equal to F, thereby increasing a probability that the terminal hops out of a deep fading frequency band, and reducing the degree of mutual interference when terminals of different cells simultaneously perform frequency hopping transmissions.
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