Sounding reference signal transmissions for massive uplink transmitters

Patent metadata

Field	Value
Publication number	US-2024178969-A1
Application number	US-202318521837-A
Country	US
Kind code	A1
Filing date	Nov 28, 2023
Priority date	Apr 21, 2022
Publication date	May 30, 2024
Grant date	—

Abstract

Methods, systems, and devices for sounding reference signal (SRS) transmission for massive uplink (UL) transmitters are described. An example method for wireless communication includes determining, by a wireless device, one or more sounding reference signal (SRS) resources, and performing, using one or more SRS ports in the one or more SRS resources, an SRS transmission to a network node. Another example method for wireless communication includes receiving, by a network node from a wireless device, a sounding reference signal (SRS) transmission over one or more SRS resources, wherein the wireless device is configured to determine the one or more SRS resources and perform the SRS transmission using one or more SRS ports in the one or more SRS resources.

First claim

1 - 43 . (canceled)

44 . A method for wireless communication, comprising:
determining, by a wireless device, one or more sounding reference signal (SRS) resources; and performing, using one or more SRS ports in the one or more SRS resources, an SRS transmission to a network node, wherein a codebook-based physical uplink shared channel (PUSCH) transmission corresponds to a single SRS resource of the one or more SRS resources, wherein the one or more SRS ports in the single SRS resource is determined based on a cyclic-shift (CS) value and a comb offset, wherein an i-th comb offset (k TC (p i ) for an i-th SRS port (p i ) is determined as (k TC (p i ) =( k TC +K TC /2) mod K TC ) in response to a condition, wherein k TC (p i ) = k TC otherwise, wherein k TC is the comb offset, and K TC =2, 4, or 8, is a transmission comb number, wherein the condition comprises N ap SRS =8 and p i ∈{1001, 1003, 1005, 1007}, and wherein N ap SRS is a number of antenna ports of the wireless device.

45 . The method of claim 44 , wherein a physical uplink shared channel (PUSCH) transmission corresponds to the one or more SRS resources, and wherein the PUSCH transmission is performed using one or more PUSCH ports.

46 . The method of claim 45 , wherein at least one of:
each of the one or more SRS resources is associated with a different power control adjustment state for the PUSCH; or the one or more SRS resources correspond to a same transmission comb number.

47 . The method of claim 44 , wherein a time offset is determined according to the transmission comb number K TC .

48 . The method of claim 44 , wherein at least one of the cyclic-shift (CS) value or the comb offset corresponding to one of the one or more SRS ports is determined based on a time unit associated with the SRS transmission.

49 . The method of claim 48 , wherein the time unit associated with the SRS comprises at least one of a counter that indicates an index associated with the SRS transmission, a number of slots, a symbol index of a symbol associated with the SRS transmission, or a number of symbols associated with the SRS transmission.

50 . An apparatus for communication, comprising:
at least one processor configured to:
determine, by a wireless device, one or more sounding reference signal (SRS) resources; and
perform, using one or more SRS ports in the one or more SRS resources, an SRS transmission to a network node,
wherein a codebook-based physical uplink shared channel (PUSCH) transmission corresponds to a single SRS resource of the one or more SRS resources, wherein the one or more SRS ports in the single SRS resource is determined based on a cyclic-shift (CS) value and a comb offset, wherein an i-th comb offset (k TC (p i ) for an i-th SRS port (p i ) is determined as (k TC (p i ) =( k TC +K TC /2) mod K TC ) in response to a condition, wherein k TC (p i ) = k TC otherwise, wherein k TC is the comb offset, and K TC =2, 4, or 8, is a transmission comb number, wherein the condition comprises N ap SRS =8 and p i ∈{1001, 1003, 1005, 1007}, and wherein N ap SRS is a number of antenna ports of the wireless device.

51 . The apparatus of claim 50 , wherein a physical uplink shared channel (PUSCH) transmission corresponds to the one or more SRS resources, and wherein the PUSCH transmission is performed using one or more PUSCH ports.

52 . The apparatus of claim 51 , wherein at least one of:
each of the one or more SRS resources is associated with a different power control adjustment state for the PUSCH; or the one or more SRS resources correspond to a same transmission comb number.

53 . The apparatus of claim 50 , wherein a time offset is determined according to the transmission comb number K TC .

54 . The apparatus of claim 50 , wherein at least one of the cyclic-shift (CS) value or the comb offset corresponding to one of the one or more SRS ports is determined based on a time unit associated with the SRS transmission.

55 . The apparatus of claim 54 , wherein the time unit associated with the SRS comprises at least one of a counter that indicates an index associated with the SRS transmission, a number of slots, a symbol index of a symbol associated with the SRS transmission, or a number of symbols associated with the SRS transmission.

56 . A method for wireless communication, comprising:
receiving, by a network node from a wireless device, a sounding reference signal (SRS) transmission over one or more SRS resources, wherein the wireless device is configured to determine the one or more SRS resources and perform the SRS transmission using one or more SRS ports in the one or more SRS resources, wherein a codebook-based physical uplink shared channel (PUSCH) transmission corresponds to a single SRS resource of the one or more SRS resources, wherein the one or more SRS ports in the single SRS resource is determined based on a cyclic-shift (CS) value and a comb offset, wherein an i-th comb offset (k TC (p i ) ) for an i-th SRS port (p i ) is determined as (k TC (p i ) =( k TC +K TC /2) mod K TC ) in response to a condition, wherein k TC (p i ) = k TC otherwise, wherein k TC is the comb offset, and K TC =2, 4, or 8, is a transmission comb number, wherein the condition comprises N ap SRS =8 and p i ∈{1001, 1003, 1005, 1007}, and wherein N ap SRS is a number of antenna ports of the wireless device.

57 . The method of claim 56 , wherein a physical uplink shared channel (PUSCH) transmission corresponds to the one or more SRS resources, and wherein the PUSCH transmission is performed using one or more PUSCH ports, and
wherein at least one of:
each of the one or more SRS resources is associated with a different power control adjustment state for the PUSCH; or
the one or more SRS resources correspond to a same transmission comb number.

58 . The method of claim 56 , wherein a time offset is determined according to the transmission comb number K TC .

59 . The method of claim 56 , wherein at least one of the cyclic-shift (CS) value or the comb offset corresponding to one of the one or more SRS ports is determined based on a time unit associated with the SRS transmission, and wherein the time unit associated with the SRS comprises at least one of a counter that indicates an index associated with the SRS transmission, a number of slots, a symbol index of a symbol associated with the SRS transmission, or a number of symbols associated with the SRS transmission.

60 . An apparatus for communication, comprising:
at least one processor configured to:
receive, by a network node from a wireless device, a sounding reference signal (SRS) transmission over one or more SRS resources,
wherein the wireless device is configured to determine the one or more SRS resources and perform the SRS transmission using one or more SRS ports in the one or more SRS resources, wherein a codebook-based physical uplink shared channel (PUSCH) transmission corresponds to a single SRS resource of the one or more SRS resources, wherein the one or more SRS ports in the single SRS resource is determined based on a cyclic-shift (CS) value and a comb offset, wherein an i-th comb offset (k TC (p i ) ) for an i-th SRS port (p i ) is determined as (k TC (p i i )=( k TC +K TC /2) mod K TC ) in response to a condition, wherein k TC (p i ) = k TC otherwise, wherein k TC is the comb offset, and K TC =2, 4, or 8, is a transmission comb number, whe

Assignees

• Zte Corp

Inventors

• Gao Bo
• Lu Zhaohua
• Yao Ke
• Zou Minqiang
• Guo Xiaolong

Classifications

• H04B7/0632

  Channel quality parameters, e.g. channel quality indicator [CQI] · CPC title

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04L5/0098

  Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04L5/0057

  Physical resource allocation for CQI · CPC title