# US 2018/0324808 A1 · Ieee 802.11 communication utilizing carrier specific interference mitigation

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- Number: US 2018/0324808 A1
- Document ID: US20180324808A1
- Status: Published application
- Kind: A1
- Application number: 16/036,641
- Filed: 2018-07-16
- Published: 2018-11-08
- Earliest claimed: 2013-01-07
- Assignees: Netgear, Inc.
- Applicants: NETGEAR, Inc.
- Inventors: Michael Clegg
- Web page: https://patentgrep.com/patent/US20180324808A1

## CPC

- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04B 17/345: Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336)
- H04J 11/0023: {Interference mitigation or co-ordination (direct sequence spread spectrum [DSSS] systems H04B1/7097; frequency hopping H04B1/713; allocation criteria for ingress interference avoidance H04L5/0062; frequency allocation criteria for requirements on out-of-channel emissions H04L5/0066; arrangements for removing intersymbol interference or baseband equalisers H04L25/03006; peak power aspects in multicarrier modulation H04L27/2614; power management H04W52/00; traffic scheduling H04W72/54, H04W72/541)}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04W 16/32: Hierarchical cell structures
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
- H04W 72/541: using the level of interference
- H04W 74/02: Hybrid access
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W 88/12: Access point controller devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Wireless communication under IEEE 802.11 standards utilizing carrier specific interference mitigation where an AP or UE employs an ultra-wideband tuner to evaluate available spectrum between several communication bands. Rather than being constrained to communicate in a single communication band, the AP and UEs may utilize more than one communication band to communicate with one another. In doing so, the AP and UE search across several bands and measure interference on a carrier-by-carrier basis across those bands. Either of the AP and UE may select a cluster of carriers for communication, where the cluster of carriers may comprise 1) contiguous carriers in a single sub-channel, 2) contiguous carriers spanning across more than one sub-channel, 3) discontinuous carriers in a single sub-channel, or 4) discontinuous carriers spanning across more than one sub-channel. The mapping between a cluster and its carriers can be fixed or reconfigurable.

## Claims

### Claim 1

A method for wireless communication in a multi-band, multi carrier wireless network, the method comprising:
measuring a channel condition for one or more of a plurality of Institute of Electrical and Electronics Engineers (IEEE) 802.11 communication bands;
based on the measured channel condition for the one or more (IEEE) 802.11 communication bands, identifying first carriers in the one or more (IEEE) 802.11 communication bands for communication;
mitigating interference on a carrier-by-carrier basis for one or more of the identified first carriers in the one or more (IEEE) 802.11 communication bands; and
transmitting, to a User Equipment (UE), wireless data on the one or more carriers in the one or more of the (IEEE) 802.11 communication bands for which interference is mitigated.

### Claim 2 (depends on 1)

The method of claim 1 where the mitigating interference comprises:
identifying interference components in the identified first carriers; and
combining the interference components in a way that causes the interference components to cancel one another.

### Claim 3 (depends on 1)

The method of claim 1 further comprising:
transmitting an indication of the identified first carriers to an eNodeB; and
in response to the transmitting, receiving an acknowledgment of the identified first carriers from the eNodeB.

### Claim 4 (depends on 1)

The method of claim 1 further comprising:
measuring a second channel condition for the one or more of the plurality (IEEE) 802.11 communication bands;
based on the measured second channel condition for the one or more (IEEE) 802.11 communication bands, identifying second carriers in the one or more (IEEE) 802.11 communication bands for communication;
mitigating interference on a carrier-by-carrier basis for one or more of the identified second carriers in the one or more (IEEE) 802.11 communication bands; and
transmitting wireless data on the one or more second carriers in the one or more of the (IEEE) 802.11 communication bands for which interference is mitigated.

### Claim 5 (depends on 1)

The method of claim 1 further comprising:
identifying second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmitting an indication of availability of the identified first carriers and identified second carriers to the UE;
in response to the transmitting, receiving an acknowledgment of at least one of the identified first carriers and identified second carriers from the UE; and
based on the received acknowledgment, mitigating interference on a carrier-by-carrier basis for at least one of the identified first carriers and identified second carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 6

An apparatus configured for wireless communication in a multi-hand, multi-carrier wireless network, the apparatus comprising:
a non-transitory memory; and
one or more processors coupled to the memory, where the one or more processors are configured to:
measure a channel condition for one or more of a plurality of Institute of Electrical and Electronics Engineers (IEEE) 802.11 communication bands;
based on the measured channel condition for the one or more (IEEE) 802,11 communication bands, identify first carriers in the one or more (IEEE) 802.11 communication bands for communication;
mitigate interference on a carrier-by-carrier basis for one or more of the identified first carriers in the one or more (IEEE) 802.11 communication bands; and
transmit, to a User Equipment (UE), wireless data on the one or more carriers in the one or more of the (IEEE) 802.11 communication bands for which interference is mitigated.

### Claim 7 (depends on 6)

The apparatus of claim 6 where the processor is further configured to:
identify interference components in the identified first carriers; and
combine the interference components in a way that causes the interference components to cancel one another.

### Claim 8 (depends on 6)

The apparatus of claim 6 where the processor is further configured to:
transmit an indication of the identified first carriers to an eNodeB; and
in response to the transmitting, receive an acknowledgment of the identified first carriers from the eNodeB.

### Claim 9 (depends on 6)

The apparatus of claim 6 where the processor is further configured to:
measure a second channel condition for the one or more of the plurality (IEEE) 802.11 communication bands;
based on the measured second channel condition for the one or more (IEEE) 802.11 communication bands, identify second carriers in the one or more (IEEE) 802.11 communication bands for communication;
mitigate interference on a carrier-by-carrier basis for one or more of the identified second carriers in the one or more (IEEE) 802.11 communication bands; and
transmit wireless data on the one or more second carriers in the one or more of the (IEEE) 802.11 communication bands for which interference is mitigated.

### Claim 10 (depends on 6)

The apparatus of claim 6 where the processor is further configured to:
identify second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmit an indication of availability of the identified first carriers and identified second carriers to the UE;
in response to the transmitting, receive an acknowledgment of at least one of the identified first carriers and identified second carriers from the UE; and
based on the received acknowledgment, mitigate interference on a carrier-by-carrier basis for at least one of the identified first carriers and identified second carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 11

A method for wireless communication in a multi-band, multi-carrier wireless network, the method comprising:
measure a channel condition information for one or more of a plurality of Institute of Electrical and Electronics Engineers (IEEE) 802.11 communication bands;
based on the measured channel condition for the one or more (IEEE) 802.11 communication bands, identifying first carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmitting an indication of the identified first carriers to the UE;
in response to the transmitting, receiving an acknowledgment of the identified first carriers from a User Equipment (UE); and
mitigating interference on a carrier-by-carrier basis for one or more of the identified first carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 12 (depends on 11)

The method of claim 11 where the mitigating interference comprises;
identifying interference components in the identified first carriers; and
combining the interference components in a way that causes the interference components to cancel one another.

### Claim 13 (depends on 11)

The method of claim 11 further comprising:
transmitting an indication of the identified first carriers to an eNodeB; and
in response to the transmitting, receiving an acknowledgment of the identified first carriers from the eNodeB.

### Claim 14 (depends on 11)

The method of claim 11 further comprising:
measuring a second channel condition for the one or more of the plurality (IEEE) 802.11 communication bands;
based on the measured second channel condition for the one or more (IEEE) 802.11 communication bands, identifying second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmitting an indication of the identified second carriers to a User Equipment (UE);
in response to the transmitting, receiving an acknowledgment of the identified second carriers from the UE; and
mitigating interference on a carrier-by-carrier basis for one or more of the identified second carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 15 (depends on 11)

The method of claim 11 further comprising:
identifying second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmitting an indication of availability of the identified first carriers and identified second carriers to a User Equipment (UE);
in response to the transmitting, receiving an acknowledgment of at least one of the identified first carriers and identified second carriers from the UE; and
based on the received acknowledgment, mitigating interference on a carrier-by-carrier basis for at least one of the identified first carriers and identified second carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 16

An apparatus configured for wireless communication in a multi-band, multi-carrier wireless network, the apparatus comprising:
a non-transitory memory; and
one or more processors coupled to the memory, where the one or more processors are configured to:
measure a channel condition for one or more of a plurality of institute of Electrical and Electronics Engineers (IEEE) 802.11 communication bands;
based on the measured channel condition for the one or more (IEEE.) 802.11 communication bands, identify first carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmit an indication of the identified first carriers to the UE;
in response to the transmitting, receive an acknowledgment of the identified first carriers from a User Equipment (UE); and
mitigate interference on a carrier-by-carrier basis for one or more of the identified first carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 17 (depends on 16)

The apparatus of claim 16 where the processor is further configured to:
identify interference components in the identified first carriers; and
combine the interference components in a way that causes the interference components to cancel one another.

### Claim 18 (depends on 16)

The apparatus of claim 16 where the processor is further configured to:
transmit an indication of the identified first carriers to an eNodeB; and
in response to the transmitting, receive an acknowledgment of the identified first carriers from the eNodeB.

### Claim 19 (depends on 16)

The apparatus of claim 16 where the processor is further configured to:
measure a second channel condition for the one or more of the plurality (IEEE) 802.11 communication bands;
based on the measured second channel condition for the one or more (IEEE) 802.11 communication bands, identify second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmit an indication of the identified second carriers to the UE;
in response to the transmitting, receiving an acknowledgment of the identified second carriers from a User Equipment (UE); and
mitigate interference on a carrier-by-carrier basis for one or more of the identified second carriers in the one or more (IEEE) 802.11 communication bands.

### Claim 20 (depends on 16)

The apparatus of claim 16 where the processor is further configured to:
identify second carriers in the one or more (IEEE) 802.11 communication bands for communication;
transmit an indication of availability of the identified first carriers and identified second carriers to a User Equipment (UE);
in response to the transmitting, receive an acknowledgment of at least one of the identified first carriers and identified second carriers from the UE; and
based on the received acknowledgment, mitigate interference on a carrier-by-carrier basis for at least one of the identified first carriers and identified second carriers in the one or more (IEEE) 802.11 communication bands.