Interference averaging and interference resource groups in a wireless communication system

• US 9,900,033 B2
• Filed: 11/03/2016
• Issued: 02/20/2018
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel Corporation
• Inventors: Davydov, Alexei, Morozov, Gregory, Etemad, Kamran, Sergeyev, Vadim, Bolotin, Ilya, Fwu, Jong-Kae
• Primary Examiner(s): Rinehart, Mark
• Assistant Examiner(s): BROCKMAN, ANGEL T
• Application Number:
  US15/343,196
• Publication Number:
  US 20170078909A1
• Time in Patent Office: 474 Days
• CPC Class Codes: H04B 1/12 Neutralising, balancing, or compensation arrangements
• CPC Class Codes: H04B 1/3827 Portable transceivers
• CPC Class Codes: H04B 17/24 with feedback of measurements to the transmitter
• CPC Class Codes: H04B 17/26 using historical data, averaging values or statistics
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
• CPC Class Codes: H04J 11/005 of intercell interference
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 25/0202 Channel estimation
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/03305 Joint sequence estimation and interference removal joint detection of several desired signals H04L25/03331
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• 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 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 : Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 : Physical resource allocation for CQI
• CPC Class Codes: H04L 5/0058 : Allocation criteria
• CPC Class Codes: H04L 5/0092 : Indication of how the channel is divided
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 : Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/10 : Reselecting an access point controller
• CPC Class Codes: H04W 40/16 : based on interference
• CPC Class Codes: H04W 52/0261 : managing power supply demand, e.g. depending on battery level
• CPC Class Codes: H04W 52/40 : during macro-diversity or soft handoff
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/121 : for groups of terminals or users
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/52 : based on load
• CPC Class Codes: H04W 72/54 : based on quality criteria
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/566 : of the information or information source or recipient
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 76/14 : Direct-mode setup
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/042 : Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 84/18 : Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 92/18 : between terminal devices
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

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.

Claims

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.