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US-20260128935-A1 - SRS ENHANCEMENT FOR INTERFERENCE RANDOMIZATION

US20260128935A1US 20260128935 A1US20260128935 A1US 20260128935A1US-20260128935-A1

Abstract

Apparatuses and methods for SRS enhancement for interference randomization in wireless networks. A method performed by a user equipment (UE) includes receiving a configuration about a sounding reference signal (SRS) resource. The configuration includes information about a cyclic shift offset ∈ { 0 , 1 , … , n SRS CS , max - 1 } and a transmission-comb offset ∈ { 0 , 1 , … , k TC - 1 } · n SRS CS , max is a maximum number of cyclic shifts and K TC is a transmission comb number. The SRS resource is associated with a plurality of antenna ports. The method further includes determining, based on a first pseudo-random sequence, the cyclic shift offset for each of the plurality of antenna ports; determining, based on a second pseudo-random sequence, the transmission-comb offset for each of the plurality of antenna ports; and transmitting, based on the cyclic shift offset and the transmission-comb offset, the SRS resource.

Inventors

  • Gilwon LEE
  • Saifur Rahman
  • Eko Onggosanusi

Assignees

  • SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date
20260507
Application Date
20251229

Claims (12)

  1. 1 . A user equipment (UE) in a communication system, the UE comprising: a transceiver configured to receive, via higher layer signaling, a configuration of a sounding reference signal (SRS) resource, wherein the configuration of the SRS resource includes a first higher parameter configuring cyclic shift hopping for the SRS resource; and a processor operably coupled with the transceiver, the processor configured to: determine an SRS sequence based on a cyclic shift hopping parameter for the cyclic shift hopping; and map the SRS sequence to resource elements (REs) within the SRS resource, wherein the transceiver is further configured to perform an SRS transmission based on the REs to which the SRS sequence is mapped.
  2. 2 . The UE of claim 1 , wherein the cyclic shift hopping parameter is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number within a frame for subcarrier spacing configuration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is a onnogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.
  3. 3 . The UE of claim 1 , wherein: the configuration of the SRS resource includes a second higher layer parameter configuring comb offset hopping for the SRS resource, and mapping of the SRS sequence is based on a comb offset hopping parameter for the comb offset hopping.
  4. 4 . The UE of claim 3 , wherein the comb offset hopping parameter is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number within a frame for subcarrier spacing cofiguration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is an orthogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.
  5. 5 . A base station (BS) in a communication system, the BS comprising: a processor; and a transceiver operably coupled with the processor, the transceiver configured to: transmit, via higher layer signaling, a configuration of a sounding reference signal (SRS) resource, wherein the configuration of the SRS resource includes a first higher parameter configuring cyclic shift hopping for the SRS resource and wherein an SRS sequence is based on a cyclic shift hopping parameter for the cyclic shift hopping; and receive an SRS transmission based on resource elements (REs) within the SRS resource to which the SRS sequence is mapped.
  6. 6 . The BS of claim 5 , wherein the cyclic shift hopping paramerci is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number within a frame for subcarrier spacing configuration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is a orthogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.
  7. 7 . The BS of claim 5 , wherein: the configuration of the SRS resource includes a second higher layer parameter configuring comb offset hopping for the SRS resource, and mapping of the SRS sequence is based on a comb offset hopping parameter for the comb offset hopping.
  8. 8 . The BS of claim 7 , wherein the comb offset hopping parameter is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number within a frame for subcarrier spacing configuration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is an orthogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.
  9. 9 . A method performed by a user equipment (UE) in a communication system, the method comprising: receiving, via higher layer signaling, a configuration of a sounding reference signal (SRS) resource, wherein the configuration of the SRS resource includes a first higher parameter configuring cyclic shift hopping for the SRS resource; determining an SRS sequence based on a cyclic shift hopping parameter for the cyclic shift hopping; mapping the SRS sequence to resource elements (REs) within the SRS resource; and performing an SRS transmission based on the REs to which the SRS sequence is mapped.
  10. 10 . The method of claim 9 , wherein the cyclic shift hopping parameter is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number with a frame for subcarrier spacing configuration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is an orthogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.
  11. 11 . The method of claim 9 , wherein: the configuration of the SRS resource includes a second higher layer parameter configuring comb offset hopping for the SRS resource, and mapping of the SRS sequence is based on a comb offset hopping parameter for the comb offset hopping.
  12. 12 . The method of claim 11 , wherein the comb offset hopping parameter is a function of n s , f μ ⁢ and ⁢ l ′ , where ⁢ n s , f μ is a slot number within a frame for subcarrier spacing configuration μ, and l ′ ∈ { 0 , 1 , … , N symb SRS - 1 } is an orthogonal frequency division multiplexing (OFDM) symbol number within the SRS resource.

Description

CROSS-REFERENCE TO RELATED APPLICATION AND CLAIM OF PRIORITY This application is a continuation of U.S. patent application Ser. No. 18/352,166, filed on Jul. 13, 2023, which claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 63/393,120 filed on Jul. 28, 2022, and U.S. Provisional Patent Application No. 63/393,124 filed on Jul. 28, 2022. The above-identified provisional patent applications are hereby incorporated by reference in their entirety. TECHNICAL FIELD The present disclosure relates generally to wireless communication systems and, more specifically, to electronic devices and methods for sounding reference signal (SRS) enhancement for interference randomization in wireless networks. BACKGROUND 5th generation (5G) or new radio (NR) mobile communications is recently gathering increased momentum with all the worldwide technical activities on the various candidate technologies from industry and academia. The candidate enablers for the 5G/NR mobile communications include massive antenna technologies, from legacy cellular frequency bands up to high frequencies, to provide beamforming gain and support increased capacity, new waveform (e.g., a new radio access technology (RAT)) to flexibly accommodate various services/applications with different requirements, new multiple access schemes to support massive connections, and so on. SUMMARY This disclosure relates to apparatuses and methods for SRS enhancement for interference randomization. In one embodiment, a user equipment (UE) is provided. The UE includes a transceiver configured to receive a configuration about a sounding reference signal (SRS) resource. The configuration includes information about a cyclic shift offset ∈{0,1,… ,nSRSCS,max-1} and a transmission-comb offset ∈{0,1,… ,KTC-1}. nSRSCS,max is a maximum number of cyclic shifts and KTC is a transmission comb number. The SRS resource is associated with a plurality of antenna ports. The UE further includes a processor operably coupled to the transceiver. The processor is configured to determine, based on a first pseudo-random sequence, the cyclic shift offset for each of the plurality of antenna ports and determine, based on a second pseudo-random sequence, the transmission-comb offset for each of the plurality of antenna ports. The transceiver is further configured to transmit, based on the cyclic shift offset and the transmission-comb offset, the SRS resource. In another embodiment, a base station (BS) is provided. The BS includes a transceiver configured to transmit a configuration about a sounding reference signal (SRS) resource and receive the SRS resource. The configuration includes information about a cyclic shift offset ∈{0,1,… ,nSRSCS,max-1} and a transmission-comb offset ∈{0,1,… ,KTC-1}. nSRSCS,max is a maximum number of cyclic shifts and KTC is a transmission comb number. The SRS resource is associated with a plurality of antenna ports. A first pseudo-random sequence indicates the cyclic shift offset for each of the plurality of antenna ports. A second pseudo-random sequence indicates the transmission-comb offset for each of the plurality of antenna ports. In yet another embodiment, a method performed by a UE is provided. The method includes receiving a configuration about a SRS resource. The configuration includes information about a cyclic shift offset ∈{0,1,… ,nSRSCS,max-1} and a transmission-comb offset ∈{0,1,… ,KTC-1}.nSRSCS,max is a maximum number of cyclic shifts and KTC is a transmission comb number. The SRS resource is associated with a plurality of antenna ports. The method further includes determining, based on a first pseudo-random sequence, the cyclic shift offset for each of the plurality of antenna ports; determining, based on a second pseudo-random sequence, the transmission-comb offset for each of the plurality of antenna ports; and transmitting, based on the cyclic shift offset and the transmission-comb offset, the SRS resource. Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims. Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term “couple” and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms “transmit,” “receive,” and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication. The terms “include” and “comprise,” as well as derivatives thereof, mean inclusion without limitation. The term “or” is inclusive, meaning and/or. The phrase “associated with,” as well as derivatives thereof, means to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be p