Methods and apparatus for phase noise estimation in data symbols for millimeter wave communications

• US 10,439,663 B2
• Filed: 03/31/2017
• Issued: 10/08/2019
• Est. Priority Date: 04/06/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Islam, Muhammad Nazmul, Luo, Tao, Subramanian, Sundar, Cezanne, Juergen, Sadiq, Bilal, Abedini, Navid, Li, Junyi
• Primary Examiner(s): Perez, James M
• Application Number:
  US15/476,511
• Publication Number:
  US 20170294926A1
• Time in Patent Office: 921 Days
• Field of Search: 375224-226, 375259-285, 375295-296, 375316-352
• CPC Class Codes: H04B 1/1027 assessing signal quality or detecting noise/interference for the received signal
• CPC Class Codes: H04B 17/336 Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0678 using different spreading codes between antennas code allocation H04J13/16
• CPC Class Codes: H04J 13/0074 Code shifting or hopping
• CPC Class Codes: H04J 2013/0088 with FDM/FDMA and TDM/TDMA
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0096 Indication of changes in allocation
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Certain aspects of the present disclosure relate to methods and apparatus for phase noise estimation in data symbols for millimeter wave (mmW). A method for wireless communications by a transmitting device is provided. The method generally includes identifying a phase noise metric associated with at least one receiving device; determining a phase noise pilot configuration based, at least in part, on the identified phase noise metric; and providing an indication of the phase noise pilot configuration to the at least one receiving device. A receiving device can receive the phase noise pilots in accordance with the configuration and determine phase noise for a data symbol based on the received phase noise pilots.

Claims

1. A method for wireless communication by a transmitting device, comprising:

identifying a phase noise metric associated with at least one receiving device;

determining a phase noise pilot configuration based, at least in part, on the identified phase noise metric; and

providing an indication of the phase noise pilot configuration to the at least one receiving device via at least one of a radio resource control (RRC) signaling, a physical downlink control channel (PDCCH), or a downlink control information (DCI),

wherein presence of phase noise pilots in a subframe is indicated via the RRC signaling and a tone pattern for the phase noise pilots is indicated implicitly by one or more parameters carried in the DCI.

2. The method of claim 1, wherein determining the phase noise pilot configuration comprises:

determining whether to transmit the phase noise pilots in a particular subframe; and

if the phase noise pilots are to be transmitted in the particular subframe, determining a tone pattern for transmitting the phase noise pilots in the particular subframe.

3. The method of claim 1, wherein the phase noise metric is identified based on a modulation and coding scheme (MCS) associated with the receiving device.

4. The method of claim 1, wherein the one or more parameters includes a modulation and coding scheme (MCS).

5. The method of claim 1, wherein the indication of the phase noise pilot configuration indicates at least one of:

a configuration according to which the transmitting device will transmit phase noise pilots or a configuration according to which the receiving device should transmit phase noise pilots.

6. The method of claim 1, wherein determining the phase noise pilot configuration comprises:

selecting a plurality of adjacent tones in at least one data symbol for transmission of the phase noise pilots, wherein the selection is based at least in part on the identified phase noise metric.

7. The method of claim 6, wherein the plurality of adjacent tones for transmission of the phase noise pilots are surrounded by tones used for transmission of data.

8. The method of claim 1, wherein determining the phase noise pilot configuration comprises:

multiplexing the phase noise pilots for different transmit antenna ports.

9. The method of claim 8, wherein the multiplexing comprises at least one of:

frequency division multiplexing (FDM), time division multiplexing (TDM), or code division multiplexing (CDM) using different spreading codes for transmitting different phase noise pilots using different antenna ports.

10. A method for wireless communication by a receiving device, comprising:

receiving an indication of a phase noise pilot configuration from a transmitting device via at least one of a radio resource control (RRC) signaling, a physical downlink control channel (PDCCH), or a downlink control information (DCI), wherein presence of phase noise pilots in a subframe is indicated via the RRC signaling and a tone pattern for the phase noise pilots is indicated implicitly by one or more parameters carried in the DCI;

receiving the phase noise pilots in at least one data symbol according to the phase noise pilot configuration; and

determining a phase noise value associated with the at least one data symbol based on the phase noise pilots received in that symbol.

11. The method of claim 10, further comprising:

providing an indication of a phase noise metric associated with the receiving device to the transmitting device.

12. The method of claim 11, wherein the phase noise metric is provided by a modulation and coding scheme (MCS) associated with the receiving device.

13. The method of claim 10, wherein the phase noise pilot configuration comprises:

an indication of whether the phase noise pilots are transmitted in a particular subframe; and

if the phase noise pilots are to be transmitted in the particular subframe, determining a tone pattern for transmitting the phase noise pilots in the particular subframe.

14. The method of claim 10, wherein the one or more parameters includes a modulation and coding scheme (MCS).

15. The method of claim 10, wherein the indication of the phase noise pilot configuration indicates at least one of:

a configuration according to which the transmitting device will transmit phase noise pilots or a configuration according to which the receiving device should transmit phase noise pilots.

16. The method of claim 10, wherein the phase noise pilot configuration comprises:

a plurality of adjacent tones in at least one data symbol for transmission of the phase noise pilots.

17. The method of claim 16, wherein the plurality of adjacent tones for transmission of the phase noise pilots are surrounded by tones used for transmission of data.

18. An apparatus for wireless communication by a transmitting device, comprising:

at least one processor coupled with a memory and configured to identify a phase noise metric associated with at least one receiving device and determine a phase noise pilot configuration based, at least in part, on the identified phase noise metric; and

a transmitter configured to provide an indication of the phase noise pilot configuration to the at least one receiving device via at least one of a radio resource control (RRC) signaling, a physical downlink control channel (PDCCH), or a downlink control information (DCI),

wherein presence of phase noise pilots in a subframe is indicated via the RRC signaling and a tone pattern for the phase noise pilots is indicated implicitly by one or more parameters carried in the DCI.

19. The apparatus of claim 18, wherein the at least one processor is configured to determine the phase noise pilot configuration by:

determining whether to transmit the phase noise pilots in a particular subframe; and

determining a tone pattern for transmitting the phase noise pilots in the particular subframe if the phase noise pilots are to be transmitted in the particular subframe.

20. An apparatus for wireless communication by a receiving device, comprising:

a receiver configured to;

receive an indication of a phase noise pilot configuration from a transmitting device via at least one of a radio resource control (RRC) signaling, a physical downlink control channel (PDCCH), or a downlink control information (DCI); and

receive phase noise pilots in at least one data symbol according to the phase noise pilot configuration, wherein presence of phase noise pilots in a subframe is indicated via the RRC signaling and a tone pattern for the phase noise pilots is indicated implicitly by one or more parameters carried in the DCI; and

at least one processor coupled with a memory and configured to determine a phase noise value associated with the at least one data symbol based on the phase noise pilots received in that symbol.

21. The apparatus of claim 20, wherein the apparatus further comprises:

a transmitter configured to provide an indication of a phase noise metric associated with the receiving device to the transmitting device.

22. The apparatus of claim 20, wherein the phase noise pilot configuration comprises:

an indication of whether the phase noise pilots are transmitted in a particular subframe; and

if the phase noise pilots are to be transmitted in the particular subframe, determine a tone pattern for transmitting the phase noise pilots in the particular subframe.

23. The apparatus of claim 21, wherein the phase noise metric is provided by a modulation and coding scheme (MCS) associated with the receiving device.