Interference averaging and interference resource groups in a wireless communication system

Patent metadata

Field	Value
Publication number	US-9900033-B2
Application number	US-201615343196-A
Country	US
Kind code	B2
Filing date	Nov 3, 2016
Priority date	Dec 3, 2012
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

Methods, apparatuses, and systems are described related to interference averaging to generate feedback information and interference averaging to demodulate receives signals. In embodiments, an evolved Node B (eNB) may transmit interference averaging information to a user equipment (UE) including a time domain averaging indicator indicating a time domain averaging window to be used by the UE for averaging interference measurements in a time domain or a frequency domain averaging indicator to indicate a frequency domain averaging window to be used by the UE for averaging interference measurements in a frequency domain. Additionally, or alternatively, the eNB may transmit an interference resource group (IRG) indicator to the UE to indicate an IRG over which the UE is to perform interference averaging to facilitate demodulation of signals received by the UE from the eNB.

First claim

What is claimed is:

1. One or more non-transitory computer-readable media having instructions, stored thereon, that when executed by one or more processors of a user equipment (UE), cause the UE to:
obtain, from an evolved Node B (eNB) of a wireless communication network, a time domain averaging indicator having a single bit to indicate that the UE is to restrict interference measurement to a most recent channel state information (CSI)-interference measurement (IM) resource;
derive an interference measurement based on the most recent CSI-IM resource in response to the time domain averaging indicator;
compute a channel quality indicator (CQI) value based on the derived interference measurement; and
report the CQI value to the eNB.

2. The one or more media of claim 1 , wherein the single bit of the time domain averaging indicator is to have a first value to indicate that the UE is to restrict interference measurement to the most recent CSI-IM resource, or a second value to indicate that time domain averaging is unrestricted in a time domain.

3. The one or more media of claim 1 , wherein the time domain averaging indicator is obtained via radio resource control (RRC) signaling.

4. The one or more media of claim 1 , wherein the instructions, when executed, further cause the UE to:
receive a channel state information (CSI) feedback model associated with the eNB; and
generate CSI for individual sub-bands of a channel based on a determination that the CSI feedback model supports sub-band CQI.

5. The one or more media of claim 1 , wherein the instructions, when executed, further cause the UE to:
obtain a frequency domain averaging indicator to indicate a frequency domain averaging window to be used by the UE for averaging interference measurements in a frequency domain;
wherein the interference measurement is further derived based on the frequency domain averaging window.

6. The one or more media of claim 5 , wherein the frequency domain averaging indicator includes a single bit that is to have a first value to indicate that the frequency domain averaging window includes a single sub-band of a channel or a second value to indicate that the frequency domain averaging window includes all sub-bands of the channel.

7. One or more non-transitory computer-readable media having instructions, stored thereon, that when executed by one or more processors of an evolved Node B (eNB), cause the eNB to:
send, to a user equipment (UE) of a wireless communication network, a time domain averaging indicator having a single bit to indicate that the UE is to restrict interference measurement to a most recent channel state information (CSI)-interference measurement (IM) resource; and
obtain, from the UE, a channel quality indicator (CQI) having a value based on the most recent CSI-IM resource.

8. The one or more media of claim 7 , wherein the single bit of the time domain averaging indicator is to have a first value to indicate that the UE is to restrict interference measurement to the most recent CSI-IM resource, or a second value to indicate that time domain averaging is unrestricted in a time domain.

9. The one or more media of claim 7 , wherein the time domain averaging indicator is sent via radio resource control (RRC) signaling.

10. The one or more media of claim 7 , wherein the instructions, when executed, further cause the eNB to:
send, to the UE, a channel state information (CSI) feedback model associated with the eNB,
wherein the CSI feedback model indicates support for sub-band CQI; and
obtain, from the UE, CSI for individual sub-bands of a channel based on the indication of support for sub-band CQI.

11. The one or more media of claim 7 , wherein the instructions, when executed, further cause the eNB to:
send a frequency domain averaging indicator to indicate a frequency domain averaging window to be used by the UE for averaging interference measurements in a frequency domain;
wherein the value of the CQI is further based on the frequency domain averaging window.

12. The one or more media of claim 11 , wherein the frequency domain averaging indicator includes a single bit that is to have a first value to indicate that the frequency domain averaging window includes a single sub-band of a channel or a second value to indicate that the frequency domain averaging window includes all sub-bands of the channel.

13. A user equipment (UE) comprising:
transceiver circuitry to:
communicate with an evolved Node B (eNB) over a channel of a wireless communication network; and
receive, from the eNB, a time domain averaging indicator to indicate that the UE is to restrict interference measurement to a most recent channel state information (CSI)-interference measurement (IM) resource;
interference measurement circuitry coupled to the transceiver circuitry, the interference measurement circuitry to generate an interference measurement based on the most recent CSI-IM resource in response to the time domain averaging indicator; and
feedback circuitry coupled to the interference measurement circuitry, the feedback circuitry to generate CSI associated with the channel based on the interference measurement;
wherein the transceiver circuitry is further to transmit the CSI to the eNB.

14. The UE of claim 13 , wherein the time domain averaging indicator has a single bit that is to have a first value to indicate that the UE is to restrict interference measurement to the most recent CSI-IM resource, or a second value to indicate that time domain averaging is unrestricted in a time domain.

15. The UE of claim 13 , wherein the transceiver circuitry is to receive the time domain averaging indicator via radio resource control (RRC) signaling.

16. The UE of claim 13 , wherein the transceiver circuitry is to receive a CSI feedback model associated with the channel, and wherein the feedback circuitry is to generate CSI for individual sub-bands of the channel based on a determination that the CSI feedback model supports sub-band channel quality indicators (CQIs).

17. The UE of claim 13 , wherein the transceiver circuitry is further to receive, from the eNB, a frequency domain averaging indicator to indicate a frequency domain averaging window to be used by the UE for averaging interference measurements in a frequency domain;
wherein the interference measurement is generated further based on the frequency domain averaging window.

18. The UE of claim 17 , wherein the frequency domain averaging indicator includes a single bit that is to have a first value to indicate that the frequency domain averaging window includes a single sub-band of the channel or a second value to indicate that the frequency domain averaging window includes all sub-bands of the channel.

19. The UE of claim 13 , further comprising:
a memory device and a display coupled to the transceiver circuitry.

Assignees

• Intel Corp

Inventors

• Davydov Alexei
• Morozov Gregory
• Etemad Kamran
• Sergeyev Vadim
• Bolotin Ilya
• Fwu Jong Kae

Classifications

• H04W72/54

  based on quality criteria · CPC title

• H04W72/12 Primary

  Wireless traffic scheduling · CPC title

• H04W72/569

  of the traffic information · CPC title

• H04W72/52

  based on load · CPC title

• H04W72/541

  using the level of interference · CPC title