Channel state information framework design for 5G multiple input multiple output transmissions

• US 10,623,158 B2
• Filed: 11/12/2018
• Issued: 04/14/2020
• Est. Priority Date: 09/29/2016
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Wang, Xiaoyi, Ghosh, Arunabha
• Primary Examiner(s): Tang, Kiet
• Application Number:
  US16/186,766
• Publication Number:
  US 20190081755A1
• Time in Patent Office: 519 Days
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/0645 Variable feedback
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

A user equipment can be configured to decompose a multiple input multiple output (MIMO) channel into multiple domains, measure the channel state information reference signal (CSI-RS) for each domain, and select a feedback format for transmission to network node based on the measurements. The network node can use the feedback to determine transmission parameters to be transmitted to the user equipment.

Claims

1. A network node device, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising;

receiving a signal from a user equipment indicating that the user equipment has decomposed a multiple input multiple output channel into multiple domains comprising an H domain and a V domain related to a co-variance between correlated antenna elements, and a U domain related to a co-phasing between multiple antenna sub-groups;

based on the signal, configuring channel state information reference signal resources for the user equipment to use for measurement of the multiple domains;

transmitting a message to the user equipment indicating the channel state information reference signal resources for the user equipment to facilitate the measurement of the multiple domains, wherein the message comprises a group of feedback formats;

transmitting a channel state information reference signal using the channel state information reference signal resources configured for the multiple domains; and

based on a decoding of feedback received from the user equipment, wherein the feedback comprises a feedback format selected from the group of feedback formats, determining a transmission parameter comprising a transmission protocol for transmissions between the network node device and the user equipment.

2. The network node device of claim 1, wherein the operations further comprise transmitting, to the user equipment, the transmission parameter.

3. The network node device of claim 1, wherein the user equipment comprises a wireless device.

4. The network node device of claim 1, further comprising an antenna panel with horizontal antenna elements and vertical antenna elements.

5. The network node device of claim 1, wherein the feedback format comprises an indicator of channel state information for the multiple domains, and wherein the indicator is employable to select the transmission parameter.

6. The network node device of claim 5, wherein the indicator of channel state information indicates a code-book entry related to a multiple input multiple output matrix for the transmissions.

7. The network node device of claim 1, wherein the feedback format comprises a channel quality indicator applicable to a quality of the channel between the network node device and the user equipment.

8. The network node device of claim 1, wherein the feedback format comprises a rank indicator representative of a number of different transmissions between the network node device and the user equipment.

9. A non-transitory machine-readable medium comprising executable instructions that, when executed by a user equipment comprising a processor, facilitate performance of operations, comprising:

decomposing a multiple input multiple output channel into multiple domains comprising H and V domains related to a co-variance between correlated antenna elements, and a U domain related to co-phasing between multiple antenna sub-groups;

transmitting a message to a network node device indicating that the user equipment has decomposed the multiple input multiple output channel into the multiple domains;

measuring a channel state information reference signal for the multiple domains based on channel state information reference signal resource configurations received from the network node device;

selecting a feedback format from a group of feedback formats received from the network node device, wherein;

the feedback format to the network node device comprises an indicator of channel state information for the multiple domains, and

the indicator is used for selection of a transmission parameter defining a transmission protocol related to the feedback format, the transmission protocol relating to transmissions between the user equipment and the network node device.

10. The non-transitory machine-readable medium of claim 9, wherein the operations further comprise transmitting, to the network node device, feedback conforming to the feedback format.

11. The non-transitory machine-readable medium of claim 9, wherein the operations further comprise receiving, from the network node device, the transmission parameter.

12. The non-transitory machine-readable medium of claim 9, wherein the indicator indicates a code-book entry related to a multiple input multiple output matrix for transmission of signals between the user equipment and the network node device.

13. The non-transitory machine-readable medium of claim 9, wherein the feedback format comprises a channel quality indicator applicable to a quality of a channel between the network node device and the user equipment.

14. The non-transitory machine-readable medium of claim 9, wherein the feedback format comprises a rank indicator that is a numeral related to a number of different transmissions between the network node device and the user equipment.

15. A method by a network node device, comprising:

facilitating, by the network node device comprising a processor, receiving a signal received from a user equipment indicating that the user equipment has decomposed a multiple input multiple output channel into multiple domains, the multiple domains comprising H and V domains related to a co-variance between correlated antenna elements and a U domain related to a co-phasing between multiple antenna sub-groups;

based on the signal, configuring, by the network node device, channel state information reference signal resources for the user equipment to measure the multiple domains;

facilitating, by the network node device, transmitting a message to the user equipment indicating the channel state information reference signal resources for the user equipment to measure on the multiple domains, wherein the message comprises format information representative of a group of feedback formats;

facilitating, by the network node device, transmitting a channel state information reference signal on the channel state information reference signal resources configured for the multiple domains;

facilitating, by the network node device, receiving feedback from the user equipment, wherein the feedback comprises a feedback format selected from the group of feedback formats, and the feedback format comprises an indicator of channel state information for the multiple domains;

decoding, by the network node device, the feedback resulting in decoded feedback;

based on the decoded feedback, selecting, by the network node device, a transmission parameter comprising a transmission protocol for a transmission of signals between the user equipment and the network node device, wherein the selection of the transmission parameter is based on the indicator; and

facilitating, by the network node device, transmitting the transmission parameter to the user equipment.

16. The method of claim 15, wherein the indicator indicates a code-book entry related to a multiple input multiple output matrix for transmission of signals between the user equipment and the network node device.

17. The method of claim 15, wherein the feedback format comprises a channel quality indicator applicable to a quality of the channel between the network node device and the user equipment.

18. The method of claim 15, wherein the feedback format comprises a rank indicator that is a numeral representative of different transmissions between the network node device and the user equipment.

19. The method of claim 15, wherein the transmission parameter comprises a modulation and coding scheme applicable to the transmission.

20. The method of claim 15, wherein the network node device comprises an antenna panel with a horizontal antenna element and a vertical antenna element.