Power headroom differential reporting

By calculating and reporting the power headroom difference of reference resource signal in the wireless communication system, the problem of difficulty in effectively managing the signal transmission power of reference resource signal in the prior art is solved, and the accuracy of channel estimation and uplink performance are improved.

CN120226416APending Publication Date: 2025-06-27QUALCOMM INC
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Patent Information

Application Number
CN202380076018.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-11-07
Filing Date
2023-10-11
Publication Date
2025-06-27

AI Technical Summary

Technical Problem

When existing wireless communication systems manage uplink transmission power, it is difficult to effectively manage the transmission power of reference resource signals, resulting in inaccurate channel estimation and affect uplink performance.

Method used

By calculating the reference resource signal power headroom difference in the user equipment (UE) and sending a power headroom report (PHR) to the serving network entity, the network entity can manage the transmission power of the reference resource signal more finely.

Benefits of technology

Improves the accuracy of channel estimation, enhances the performance of the uplink, and allows network entities to better manage communication with the UE.

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Abstract

The present disclosure provides systems, methods, and devices for wireless communication that support power headroom differential reporting for reference resource signals transmitted at a different transmit power than other uplink transmissions. In a first aspect, a method of wireless communication includes determining, by a user equipment (UE), a power headroom value using a maximum configured transmit power and a transmit power configured for uplink transmissions with a configured modulation and coding scheme (MCS). The UE determines a reference resource signal power clearance value by using the maximum configuration transmission power and reference resource signal transmission power configured for reference resource signal transmission, and calculates a reference resource power clearance difference between the power clearance value and the reference resource signal power clearance value, and transmitting a report including the uplink transmission power headroom value and the reference resource power headroom difference. Other aspects and features are also claimed and described.
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