# US 2026/0074831 A1 · Cyclic Redundancy Check False Alarm Mitigation

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- Number: US 2026/0074831 A1
- Document ID: US20260074831A1
- Status: Published application
- Kind: A1
- Application number: 18/882,382
- Filed: 2024-09-11
- Published: 2026-03-12
- Earliest claimed: 2024-09-11
- Assignees: Dell Products L.P.
- Applicants: Dell Products L.P.
- Inventors: Eran Goldstein; Masoud Ebrahimi Tazeh Mahalleh; Wei Chu
- Web page: https://patentgrep.com/patent/US20260074831A1

## CPC

- H04L 1/0061: {Error detection codes}
- H04L 1/0045: {Arrangements at the receiver end}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling}
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- 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 system can receive data from a device on a channel for broadband cellular communications. The system can, based on determining that a cyclic redundancy check passes for the data, decode a payload of the data to produce a transmitted signal. The system can determine a metric of signal quality for the channel based on at least a portion of the transmitted signal that is separate from a pilot resource. The system can compare the metric of signal quality to a value specified by a signal quality criterion, to produce a signal quality result, wherein, based on the signal quality result indicating that the metric of signal quality is less than the value specified by the signal quality criterion, determine that the cyclic redundancy check passing for the data comprises a false alarm, and classify the data as a discontinuous transmission; and otherwise, determine that the data is valid.

## Claims

### Claim 1

A system, comprising:
at least one processor; and
at least one memory that stores executable instructions that, when executed by the at least one processor, facilitate performance of operations, comprising:
receiving data from a device on a channel for broadband cellular communications;
determining that a cyclic redundancy check passes for the data;
based on the determining that the cyclic redundancy check passes for the data, decoding a payload of the data to produce a transmitted signal;
determining a metric of signal quality for the channel based on at least a portion of the transmitted signal that is separate from a pilot resource; and
comparing the metric of signal quality to a value specified by a signal quality criterion, to produce a signal quality result, wherein,
based on the signal quality result indicating that the metric of signal quality is less than the value specified by the signal quality criterion,
determining that the cyclic redundancy check passing for the data comprises a false alarm, and
classifying the data as a discontinuous transmission, and
based on the signal quality result indicating that the metric of signal quality is greater than or equal to the value specified by the signal quality criterion, determining that the data is valid.

### Claim 2 (depends on 1)

The system of claim 1, wherein the signal quality criterion is based on a scheduling configuration.

### Claim 3 (depends on 2)

The system of claim 2, wherein the scheduling configuration comprises a specified number of resource blocks.

### Claim 4 (depends on 2)

The system of claim 2, wherein the scheduling configuration comprises a specified number of demodulation reference signals.

### Claim 5 (depends on 1)

The system of claim 1, wherein the metric of signal quality comprises a signal to noise plus interference ratio or a peak signal to noise metric.

### Claim 6 (depends on 1)

The system of claim 1, wherein the determining that the cyclic redundancy check passes for the data comprises:
determining that the cyclic redundancy check passes for the data based on satisfaction of a hypothesis of a group of hypotheses usable to test the cyclic redundancy check.

### Claim 7 (depends on 1)

The system of claim 1, wherein the determining that the cyclic redundancy check passes for the data comprises:
based on determining that the cyclic redundancy check fails for the data based on a first hypothesis of a group of hypotheses usable to test the cyclic redundancy check, determining that the cyclic redundancy check passes for the data based on satisfaction of a second hypothesis of the group of hypotheses.

### Claim 8 (depends on 7)

The system of claim 7, wherein the metric of signal quality is a first metric of signal quality, and wherein the determining that the cyclic redundancy check fails for the data based on the first hypothesis of the group of hypotheses comprises:
determining that a second metric of signal quality that corresponds to the first hypothesis is less than the value specified by the signal quality criterion.

### Claim 9 (depends on 1)

The system of claim 1, wherein the cyclic redundancy check is determined to have failed where the cyclic redundancy check fails with each hypothesis of a group of hypotheses usable to test the cyclic redundancy check.

### Claim 10

A method, comprising:
determining, by a system comprising at least one processor, that a cyclic redundancy check passes for data received on a channel established via a broadband cellular communications network;
based on the determining that the cyclic redundancy check passes for the data, decoding, by the system, a payload of the data to produce a transmitted signal;
determining, by the system, a metric of signal quality for the channel based on reference symbols of the transmitted signal, and at least some data symbols reconstructed from a data payload of the transmitted signal that passes for the cyclic redundancy check;
evaluating, by the system, the metric of signal quality with respect to a signal quality criterion, to produce a signal quality evaluation result; and
where the signal quality evaluation result indicates that the metric of signal quality is less than the signal quality criterion, classifying, by the system, the data as a discontinuous transmission.

### Claim 11 (depends on 10)

The method of claim 10, further comprising:
where the signal quality evaluation result indicates that the metric of signal quality is less than the signal quality criterion, disregarding, by the system, that the cyclic redundancy check passes for the data.

### Claim 12 (depends on 10)

The method of claim 10, further comprising:
where the signal quality evaluation result indicates that the metric of signal quality is greater than or equal to the signal quality criterion, determining, by the system, that the data is valid.

### Claim 13 (depends on 10)

The method of claim 10, wherein determining the metric of signal quality for the channel is based on at least a portion of the transmitted signal that is separate from a demodulation reference signal.

### Claim 14 (depends on 10)

The method of claim 10, wherein the cyclic redundancy check comprises error-detecting data for the data.

### Claim 15

A non-transitory computer-readable medium comprising instructions that, in response to execution, cause a system comprising at least one processor to perform operations, comprising:
based on an error-detection code passing for data received on a channel of broadband cellular communications, decoding a payload of the data to produce a transmitted signal;
determining a metric of signal quality for the channel based on at least a portion of a data payload of the transmitted signal;
comparing the metric of signal quality to a threshold value determined with reference to a signal quality criterion, to produce a signal quality result; and
in response to the signal quality result indicating that the metric of signal quality is greater than or equal to the threshold value, determining that the data is valid.

### Claim 16 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein the operations further comprise:
in response to the signal quality result indicating that the metric of signal quality is less than the threshold value, classifying the data as a discontinuous transmission.

### Claim 17 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein the operations further comprise:
in response to the signal quality result indicating that the metric of signal quality is less than the threshold value, determining that the error-detection code passing was mis-detected.

### Claim 18 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein the system comprises a base station that facilitates the broadband cellular communications.

### Claim 19 (depends on 15)

The non-transitory computer-readable medium of claim 15, wherein the signal quality criterion is specified as a function of a scheduling configuration.

### Claim 20 (depends on 19)

The non-transitory computer-readable medium of claim 19, wherein the scheduling configuration specifies a number of resource blocks or a number of demodulation reference signals, and wherein the signal quality criterion is specified as a function of the number of resource blocks or a number of demodulation reference signals.
