# US 11,909,913 B2 · Nuisance call countermeasure apparatus, method and program

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- Number: US 11,909,913 B2
- Document ID: US11909913B2
- Status: Granted
- Kind: B2
- Application number: 17/786,649
- Filed: 2020-01-07
- Published: 2023-02-09
- Granted: 2024-02-20
- Earliest claimed: 2020-01-07
- Assignees: Nippon Telegraph and Telephone Corporation
- Applicants: Nippon Telegraph and Telephone Corporation
- Inventors: Kenji Terada
- Web page: https://patentgrep.com/patent/US11909913B2

## CPC

- H04M 3/436: Arrangements for screening incoming calls {, i.e. evaluating the characteristics of a call before deciding whether to answer it (based on the calling party profile H04M3/42059; based on location H04M3/42348; based on presence H04M3/42365; diversion H04M3/54)}
- H04L 65/1079: {of unsolicited session attempts, e.g. SPIT}
- H04L 65/1104: Session initiation protocol [SIP]
- H04M 7/0078: {Security; Fraud detection; Fraud prevention}
- H04M 15/00: Arrangements for metering, time-control or time indication {; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP}
- H04M 15/47: {Fraud detection or prevention means}
- H04W 4/24: Accounting or billing
- H04L 12/14: Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A spam call prevention apparatus 11 includes: a response unit 111 configured to convey, to a phone terminal of a sender of a call, a response that, in a case where the call from the sender is evaluated as a spam or a fraud by a receiver of the call, the sender is billed a sum of money corresponding to a probability of being evaluated as the spam or the fraud; a notification unit 112 configured to notify, when the sender has requested, in responding to the response, the call to the receiver, a phone terminal of the receiver of a request for returning an evaluation result of evaluating the call from the sender after the call between the sender and the receiver has ended; and a determination unit 114 configured to determine, when the call from the sender has been evaluated as the spam or the fraud in the evaluation result, the sum of money corresponding to the probability of being evaluated as the spam or the fraud, as a sum of billing.

## Claims

### Claim 1

A spam call prevention apparatus comprising:
a response unit, including one or more processors, configured to convey, to a phone terminal of a sender of a call, a response that, in a case where the call from the sender is evaluated as a spam or a fraud by a receiver of the call, the sender is billed a sum of money corresponding to a probability of being evaluated as the spam or the fraud;
a notification unit, including one or more processors, configured to notify, when the sender has requested, in responding to the response, the call to the receiver, a phone terminal of the receiver of a request for returning an evaluation result of evaluating the call from the sender after the call between the sender and the receiver has ended; and
a determination unit, including one or more processors, configured to determine, when the call from the sender has been evaluated as the spam or the fraud in the evaluation result, the sum of money corresponding to the probability of being evaluated as the spam or the fraud, as a sum of billing.

### Claim 2 (depends on 1)

The spam call prevention apparatus according to claim 1, wherein
the determination unit is configured to determine, as the sum of billing, p satisfying a relationship of (p×q)>r, where q represents the probability of being evaluated as the spam or the fraud, p represents the sum of money corresponding to the probability of being evaluated as the spam or the fraud, and r represents a sum of income expected from a spam call or a fraud call.

### Claim 3 (depends on 1)

The spam call prevention apparatus according to claim 1, wherein
the determination unit is configured to determine, as the sum of billing, a different sum of money between a case where the call from the sender has been evaluated as the spam in the evaluation result and a case where the call from the sender has been evaluated as the fraud in the evaluation result.

### Claim 4 (depends on 1)

The spam call prevention apparatus according to claim 1, wherein
in a case where calls from the sender are evaluated as the spam, the fraud, or a normal by a plurality of receivers of the calls, the determination unit is configured to determine, as the sum of billing, a sum of money corresponding to an evaluation tendency of each of the plurality of receivers.

### Claim 5 (depends on 1)

The spam call prevention apparatus according to claim 1, wherein
the determination unit is configured to determine, as the sum of billing, a sum of money corresponding to a cost of issuing an ID associated with the phone terminal of the sender.

### Claim 6

A spam call prevention method performed by a spam call prevention apparatus, the spam call prevention method comprising:
by the spam call prevention apparatus, conveying, to a phone terminal of a sender of a call, a response that, in a case where the call from the sender is evaluated as a spam or a fraud by a receiver of the call, the sender is billed a sum of money corresponding to a probability of being evaluated as the spam or the fraud;
by the spam call prevention apparatus, notifying, when the sender has requested, in responding to the response, the call to the receiver, a phone terminal of the receiver of a request for returning an evaluation result of evaluating the call from the sender after the call between the sender and the receiver has ended; and
by the spam call prevention apparatus, determining, when the call from the sender has been evaluated as the spam or the fraud in the evaluation result, the sum of money corresponding to the probability of being evaluated as the spam or the fraud, as a sum of billing.

### Claim 7

A non-transitory computer readable medium storing one or more instructions causing a computer to execute:
by a spam call prevention apparatus, conveying, to a phone terminal of a sender of a call, a response that, in a case where the call from the sender is evaluated as a spam or a fraud by a receiver of the call, the sender is billed a sum of money corresponding to a probability of being evaluated as the spam or the fraud;
by the spam call prevention apparatus, notifying, when the sender has requested, in responding to the response, the call to the receiver, a phone terminal of the receiver of a request for returning an evaluation result of evaluating the call from the sender after the call between the sender and the receiver has ended; and
by the spam call prevention apparatus, determining, when the call from the sender has been evaluated as the spam or the fraud in the evaluation result, the sum of money corresponding to the probability of being evaluated as the spam or the fraud, as a sum of billing.

### Claim 8 (depends on 6)

The spam call prevention method according to claim 6, further comprising:
determining, as the sum of billing, p satisfying a relationship of (p×q)>r, where q represents the probability of being evaluated as the spam or the fraud, p represents the sum of money corresponding to the probability of being evaluated as the spam or the fraud, and r represents a sum of income expected from a spam call or a fraud call.

### Claim 9 (depends on 6)

The spam call prevention method according to claim 6, further comprising:
determining, as the sum of billing, a different sum of money between a case where the call from the sender has been evaluated as the spam in the evaluation result and a case where the call from the sender has been evaluated as the fraud in the evaluation result.

### Claim 10 (depends on 6)

The spam call prevention method according to claim 6, further comprising:
in a case where calls from the sender are evaluated as the spam, the fraud, or a normal by a plurality of receivers of the calls, determining, as the sum of billing, a sum of money corresponding to an evaluation tendency of each of the plurality of receivers.

### Claim 11 (depends on 6)

The spam call prevention method according to claim 6, further comprising:
determining, as the sum of billing, a sum of money corresponding to a cost of issuing an ID associated with the phone terminal of the sender.

### Claim 12 (depends on 7)

The non-transitory computer readable medium according to claim 7, further comprising:
determining, as the sum of billing, p satisfying a relationship of (p×q)>r, where q represents the probability of being evaluated as the spam or the fraud, p represents the sum of money corresponding to the probability of being evaluated as the spam or the fraud, and r represents a sum of income expected from a spam call or a fraud call.

### Claim 13 (depends on 7)

The non-transitory computer readable medium according to claim 7, further comprising:
determining, as the sum of billing, a different sum of money between a case where the call from the sender has been evaluated as the spam in the evaluation result and a case where the call from the sender has been evaluated as the fraud in the evaluation result.

### Claim 14 (depends on 7)

The non-transitory computer readable medium according to claim 7, further comprising:
in a case where calls from the sender are evaluated as the spam, the fraud, or a normal by a plurality of receivers of the calls, determining, as the sum of billing, a sum of money corresponding to an evaluation tendency of each of the plurality of receivers.

### Claim 15 (depends on 7)

The non-transitory computer readable medium according to claim 7, further comprising:
determining, as the sum of billing, a sum of money corresponding to a cost of issuing an ID associated with the phone terminal of the sender.