Transmission, reception, and configuration of a csirs with a configurable bandwidth

Patent metadata

Field	Value
Publication number	US-2020244419-A1
Application number	US-201716637067-A
Country	US
Kind code	A1
Filing date	Aug 11, 2017
Priority date	Aug 11, 2017
Publication date	Jul 30, 2020
Grant date	—

Abstract

Wireless communication that includes transmission, reception, and configuration of a CSIRS with a configurable band-width is discussed. A base station/gNB may determine a number of antenna ports to be used for wireless communication. The base station/gNB may allocate a first plurality of frequency resources for the transmission of the CSIRS based on the determined number of antenna ports, and may transmit the CSIRS over the first plurality of frequency resources. A mobile device may receive the CSIRS over the first plurality of frequency resources and estimate at least one of channel quality and interference associated with the first plurality of frequency resources based on the received CSIRS.

First claim

What is claimed is:

1 . A method of wireless communication, comprising:
determining, by a processor, a number of antenna ports to be used for wireless communication; allocating, by the processor, a first plurality of frequency resources for the transmission of a channel state information reference signal (CSIRS) based on the determined number of antenna ports; and transmitting, by the processor, the CSIRS over the first plurality of frequency resources.

2 . The method of claim 1 , further comprising:
determining that the number of antenna ports is equal to or less than a first threshold number of antenna ports; and determining the frequency resources allocated for the transmission of a mini-slot, wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of the mini-slot when the number of antenna ports is equal to or less than the first threshold number of antenna ports.

3 . The method of claim 1 , further comprising:
determining that the number of antenna ports is equal to or less than a first threshold number of antenna ports; and determining the frequency resources allocated for the transmission of control information, wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of control information when the number of antenna ports is equal to or less than the first threshold number of antenna ports.

4 . The method of claim 3 , further comprising:
determining that the number of antenna ports is greater than the first threshold number of antenna ports and equal to or less than a second threshold number of antenna ports; and determining the frequency resources allocated for the transmission of a demodulation reference signal (DMRS), wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of the DMRS when the number of antenna ports is greater than the first threshold number of antenna ports and equal to or less than the second threshold number of antenna ports.

5 . The method of claim 4 , wherein the number of antenna ports corresponds to the number of antenna ports used for the transmission of the DMRS.

6 . The method of claim 5 , wherein the second threshold number of antenna ports corresponds to a maximum number of antenna ports available for a DMRS transmission, and wherein the maximum number of antenna ports available for a DMRS transmission is determined based on a configuration of the DMRS.

7 . The method of claim 4 , further comprising:
determining that the number of antenna ports is greater than the second threshold number of antenna ports, wherein the first plurality of frequency resources includes or corresponds to an entire number of frequency resources available for transmission of the CSIRS when the number of antenna ports is greater than the second threshold number of antenna ports.

8 . The method of claim 1 , wherein the first plurality of frequency resources are a subset of a number of frequency resources available for transmission of the CSIRS.

9 . The method of claim 1 , wherein the first plurality of frequency resources are contiguous frequency resources.

10 . (canceled)

11 . An apparatus configured for wireless communication, comprising:
means for determining, by a processor, a number of antenna ports to be used for wireless communication; means for allocating, by the processor, a first plurality of frequency resources for the transmission of a channel state information reference signal (CSIRS) based on the determined number of antenna ports; and means for transmitting, by the processor, the CSIRS over the first plurality of frequency resources.

12 . The apparatus of claim 11 , further comprising:
means for determining that the number of antenna ports is equal to or less than a first threshold number of antenna ports; and means for determining the frequency resources allocated for the transmission of a mini-slot, wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of the mini-slot when the number of antenna ports is equal to or less than the first threshold number of antenna ports.

13 . The apparatus of claim 11 , further comprising:
means for determining that the number of antenna ports is equal to or less than a first threshold number of antenna ports; and means for determining the frequency resources allocated for the transmission of control information, wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of control information when the number of antenna ports is equal to or less than the first threshold number of antenna ports.

14 . The apparatus of claim 13 , further comprising:
means for determining that the number of antenna ports is greater than the first threshold number of antenna ports and equal to or less than a second threshold number of antenna ports; and means for determining the frequency resources allocated for the transmission of a demodulation reference signal (DMRS), wherein the first plurality of frequency resources includes or corresponds to the frequency resources allocated for the transmission of the DMRS when the number of antenna ports is greater than the first threshold number of antenna ports and equal to or less than the second threshold number of antenna ports.

15 . The apparatus of claim 14 , wherein the number of antenna ports corresponds to the number of antenna ports used for the transmission of the DMRS.

16 . The apparatus of claim 15 , wherein the second threshold number of antenna ports corresponds to a maximum number of antenna ports available for a DMRS transmission, and wherein the maximum number of antenna ports available for a DMRS transmission is determined based on a configuration of the DMRS.

17 . The apparatus of claim 14 , further comprising:
means for determining that the number of antenna ports is greater than the second threshold number of antenna ports, wherein the first plurality of frequency resources includes or corresponds to an entire number of frequency resources available for transmission of the CSIRS when the number of antenna ports is greater than the second threshold number of antenna ports.

18 . The apparatus of claim 11 , wherein the first plurality of frequency resources are a subset of a number of frequency resources available for transmission of the CSIRS.

19 . The apparatus of claim 11 , wherein the first plurality of frequency resources are contiguous frequency resources.

20 . (canceled)

21 . A non-transitory computer-readable medium having program code recorded thereon, the program code including:
program code for causing a computer to determine a number of antenna ports to be used for wireless communication; program code for causing a computer to allocate a first plurality of frequency resources for the transmission of a channel state information reference signal (CSIRS) based on the determined number of antenna ports; and program code for causing a computer to transmit the CSIRS over the first plurality of frequency resources.

22 . The non-transitory computer-readable medium of claim 21 , further comprising:
program code for causing a computer to determine that the number of antenna ports is equal to or less than a fir

Assignees

• Manolakos Alexandros
• Hao Chenxi
• Zhang Yu
• Chen Wanshi
• Gaal Peter
• Qualcomm Inc

Inventors

• Manolakos Alexandros
• Hao Chenxi
• Zhang Yu
• Chen Wanshi
• Gaal Peter

Classifications

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0051 Primary

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0023

  Time-frequency-space · CPC title