Sounding reference signal resource configuration

By configuring a collection of multiple antenna ports for UE for simultaneous SRS transmission, the problem of limiting 4 TX ports in NR Rel-17 is solved, efficient resource configuration of 8 TX ports is achieved, spectrum efficiency and interference mitigation are improved, and MIMO enhancement requirements of Rel-18 are met.

CN120476560APending Publication Date: 2025-08-12NOKIA TECHNOLOGIES OY
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Patent Information

Application Number
CN202280102384.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2022-11-07
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

In the prior art, the NR Rel-17 specification only supports UL SRS resource configuration with 4 receiving antenna ports, limiting the potential advantages of DL transmission, resulting in insufficient spectral efficiency and interference mitigation, and unable to meet the demand for 8 TX antenna ports in Rel-18.

Method used

It provides a UL SRS resource configuration mechanism, allowing UE to use a set of multiple antenna ports for simultaneous SRS transmission, and configure it through one or more OFDM symbols. It supports antenna switching, codebook and non-codebook transmission of 8 TX antenna ports, enhancing scheduling flexibility.

Benefits of technology

It realizes effective resource allocation for 8 TX antenna ports, improves spectrum efficiency and interference mitigation capabilities, and meets the requirements of MIMO enhancement in Rel-18.

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Abstract

Example embodiments of the present disclosure relate to SRS resource configuration. In one example method, an apparatus receives a configuration of one or more uplink (UL) sounding reference signal (SRS) resources from a network device, the configuration of the one or more UL SRS resources for simultaneous SRS transmissions at the apparatus utilizing a set of one or more antenna ports, wherein a set of one or more antenna ports associated with the one or more UL SRS resources corresponds to one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols. The apparatus transmits a simultaneous SRS transmission to the network device based on the configuration. In this manner, a mechanism for UL SRS resource configuration and corresponding transmissions with multiple antenna ports may be defined, and enhanced scheduling flexibility may be obtained.
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