Uplink (UL) sounding reference signal (SRS) resource configuration

Inventors: Juha Pekka Karjalainen (Oulu, FI); Mihai Enescu (Espoo, FI); Hiromasa Umeda (Tokyo, JP); Pasi Eino Tapio Kinnunen (Oulu, FI); Kyoungmin Park (Seoul, KR)

Assignee: NOKIA TECHNOLOGIES OY

H04L5/0048 H04L5/0094

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Quick Facts

Patent No.: US 12689477
App. No.: 18/554,017
Granted: Jul 21, 2026
Kind: B2

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Abstract

Systems, methods, apparatuses, and computer program products for uplink (UL) sounding reference signal (SRS) resource configuration may be provided. UL SRS resource configuration and related transmission procedures for intra-slot and inter-slot time bundling of one or more resources may be provided. In this regard, transmission bandwidth and/or repetition factors may be adapted for SRS occasions. The adaptation may be performed across an SRS bandwidth, and on an intra-slot or inter-slot basis.

Claims (39)

1 . A method, comprising:

receiving, by a user equipment, an uplink sounding reference signal configuration, wherein the uplink sounding reference signal configuration comprises indications of at least:

a first repetition factors specific for multiple sounding reference signal transmission occasions in a center part of a sounding reference signal bandwidth and a second repetition factor specific for multiple sounding reference signal transmission occasions in edge parts of the sounding reference signal bandwidth, the second repetition factor being higher than the first repetition factor; and

transmitting sounding reference signals on the multiple sounding reference signal transmission occasions, wherein sounding reference signals transmitted with the first repetition factor are transmitted at a higher power than sounding reference signals transmitted with the second repetition factor.

2 . The method according to claim 1 , wherein the uplink sounding reference signal configuration further comprises an indication of intra-slot or inter-slot time bundling of one or more resources.

3 . The method according to claim 1 , wherein the set of sounding reference signal transmission bandwidths or the set of repetition factors for the multiple sounding reference signal transmission occasions comprise the set of repetition factors for the set of sounding reference signal transmission bandwidths per transmission time instant, per frequency hop, or per physical resource block set.

4 . The method according to claim 1 , wherein the transmitting the signaling further comprises:

transmitting the signaling in consecutive or non-consecutive symbols in time defined by the repetition factors specific to the set of sounding reference signal transmission bandwidths.

5 . The method according to claim 1 , wherein the set of repetition factors comprise different repetition factors specific for consecutive or non-consecutive symbols.

6 . An apparatus, comprising:

at least one processor; and

at least one memory including computer program code,

wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:

transmit an uplink sounding reference signal configuration, wherein the uplink sounding reference signal configuration comprises indications of at least:

receive signaling on the multiple sounding reference signal transmission occasions, sounding reference signals received with the first repetition factor being received at a higher power than sounding reference signals received with the second repetition factor.

7 . The apparatus according to claim 6 , wherein the uplink sounding reference signal configuration further comprises an indication of intra-slot or inter-slot time bundling of one or more resources.

8 . The apparatus according to claim 6 , wherein the set of sounding reference signal transmission bandwidths or the set of repetition factors for the multiple sounding reference signal transmission occasions comprise the set of repetition factors for the set of sounding reference signal transmission bandwidths per transmission time instant, per frequency hop, or per physical resource block set.

9 . The apparatus according to claim 6 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus, when receiving the signaling, at least to:

receive the signaling in consecutive or non-consecutive symbols in time defined by the set of repetition factors specific to the set of sounding reference signal transmission bandwidths.

10 . The apparatus according to claim 6 , wherein the set of repetition factors comprise different repetition factors specific for consecutive or non-consecutive symbols.

11 . The apparatus according to claim 6 , wherein the set of sounding reference signal transmission bandwidths or the set of repetition factors are based on at least a power class, a modulation, waveforms, a band, a dual connectivity or uplink carrier aggregation band configuration, or a number of transmitter chains of a user equipment or channel bandwidth based on physical resource blocks or channel band covering a set of physical resource blocks associated with a specific carrier frequency.

12 . The apparatus according to claim 6 , wherein the set of sounding reference signal transmission bandwidths comprise different combinations of the set of sounding reference signal transmission bandwidths in the one or more resources with or without transmission repetition.

13 . An apparatus, comprising:

at least one processor; and

at least one memory including computer program code,

wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:

receive an uplink sounding reference signal configuration, wherein the uplink sounding reference signal configuration comprises indications of at least:

transmit sounding reference signals on the multiple sounding reference signal transmission occasions, wherein sounding reference signals transmitted with the first repetition factor are transmitted at a higher power than sounding reference signals transmitted with the second repetition factor.

14 . The apparatus according to claim 13 , wherein the uplink sounding reference signal configuration further comprises an indication of intra-slot or inter-slot time bundling of one or more resources.

15 . The apparatus according to claim 13 , wherein the set of sounding reference signal transmission bandwidths or the set of repetition factors for the multiple sounding reference signal transmission occasions comprise the set of repetition factors for the set of sounding reference signal transmission bandwidths per transmission time instant, per frequency hop, or per physical resource block set.

16 . The apparatus according to claim 13 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus, when transmitting the signaling, at least to:

transmit the signaling in consecutive or non-consecutive symbols in time defined by the repetition factors specific to the set of sounding reference signal transmission bandwidths.

17 . The apparatus according to claim 13 , wherein the set of repetition factors comprise different repetition factors specific for consecutive or non-consecutive symbols.

18 . The apparatus according to claim 13 , wherein the set of sounding reference signal transmission bandwidths or the set of repetition factors are based on at least a power class, a modulation, waveforms, a band, a dual connectivity or uplink carrier aggregation band configuration, or a number of transmitter chains of the apparatus or channel bandwidth based on physical resource blocks or channel band covering a set of physical resource blocks associated with a specific carrier frequency.

19 . The apparatus according to claim 13 , wherein the set of sounding reference signal transmission bandwidths comprise different combinations of the set of sounding reference signal transmission bandwidths in the one or more resources with or without transmission repetition.

20 . The apparatus according to claim 13 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus, when transmitting the signaling, at least to:

transmit the signaling using a same per physical resource block power for the one or more resources in one symbol.