# US 12,184,477 B2 · Systems and methods for determining and correcting network failures in a wireless telecommunications network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,184,477 B2 - Document ID: US12184477B2 - Status: Granted - Kind: B2 - Application number: 17/563,232 - Filed: 2021-12-28 - Published: 2023-06-29 - Granted: 2024-12-31 - Earliest claimed: 2021-12-28 - Assignees: T-Mobile Innovations LLC - Applicants: T-Mobile Innovations LLC - Inventors: Zain Us Salekin Mohammed - Web page: https://patentgrep.com/patent/US12184477B2 ## CPC - H04L 41/0654: using network fault recovery (ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437) - H04L 41/0681: Configuration of triggering conditions - H04L 41/142: using statistical or mathematical methods - H04W 24/04: Arrangements for maintaining operational condition - H04W 24/08: Testing, {supervising or monitoring} using real traffic - 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 Methods and systems for determining and correcting network failures in a wireless telecommunications network. The methods can include determining a rate of communications terminating to voicemail due to one or more network failures. The methods can also include determining if the rate of communications terminating to voicemail due to one or more network failures exceeds a threshold value. When the threshold is exceeded, an action can be performed. The action can include one or more of communicating an alert, providing a graphical representation of at least the rate of communications terminating to voicemail due to one or more network failures, or performing or recommending one or more mitigation steps. ## Claims ### Claim 1 A computerized system comprising: one or more processors; and a non-transitory computer storage media storing computer-useable instructions that, when used by the one or more processors, cause the one or more processors to: by a network analyzer: receive data associated with communications in a wireless telecommunications network; determine a rate of communications terminating to voicemail due to one or more network failures; determine that the rate of communications terminating to voicemail due to one or more network failures exceeds a threshold value; and adjust one or more network settings to correct the one or more network failures exceeding the threshold value associated with the rate of communications terminating to voicemail. ### Claim 2 (depends on 1) The computerized system according to claim 1, wherein the data associated with the communications in the wireless telecommunications network comprises charging data records. ### Claim 3 (depends on 2) The computerized system according to claim 2, wherein the charging data records are generated by a telephony application server associated with the wireless telecommunications network. ### Claim 4 (depends on 1) The computerized system according to claim 1, wherein the determining the rate of communications terminating to voicemail due to one or more network failures comprises calculating a number of communications terminating to voicemail due to one or more network failures relative to all terminating communications, using the following quotient: number of communications terminating to voicemail due to one or more network failures/total number of terminating communications, wherein the number of communications terminating to voicemail due to one or more network failures includes the communication records, in the data associated with communications in the wireless telecommunications network, that include: one or more identifiers that a communication was forwarded to voicemail; and that also include one or more identifiers specifying that the terminating subscriber was not reachable in the wireless telecommunications network. ### Claim 5 (depends on 1) The computerized system according to claim 1, wherein the action comprises communicating an alert that the rate of communications terminating to voicemail due to one or more network failures exceeds the threshold value. ### Claim 6 (depends on 1) The computerized system according to claim 1, wherein the threshold value is determined based on historic rates of communications terminating to voicemail due to one or more network failures. ### Claim 7 (depends on 1) The computerized system according to claim 1, wherein the rate of communications terminating to voicemail due to one or more network failures is determined based on the data associated with communications in a wireless telecommunications network spanning a time interval of at least one hour, at least one day, at least three days, or at least seven days. ### Claim 8 (depends on 1) The computerized system according to claim 1, further comprising: determining that at least a portion of the communications terminating to voicemail due to one or more network failures each exhibit one or more of the same or similar attributes. ### Claim 9 (depends on 8) The computerized system according to claim 8, wherein the one or more of the same or similar attributes comprise: geographical region, device manufacturer, device type, device operating system, location information associated with a device, a cell site, a network node, one or more radios at a cell site, radio manufacturer, network node software, or a combination thereof. ### Claim 10 A method for determining and correcting network failures in a wireless telecommunications network, the method comprising: by a network analyzer: receiving data associated with communications in a wireless telecommunications network; determining a rate of communications terminating to voicemail due to one or more network failures; determining that the rate of communications terminating to voicemail due to one or more network failures exceeds a threshold value; and adjusting one or more network settings to correct the one or more network failures exceeding the threshold value associated with the rate of communications terminating to voicemail. ### Claim 11 (depends on 10) The method according to claim 10, wherein the data associated with communications in the wireless telecommunications network comprises charging data records. ### Claim 12 (depends on 10) The method according to claim 10, wherein the determining the rate of communications terminating to voicemail due to one or more network failures comprises calculating a number of communications terminating to voicemail due to one or more network failures relative to all terminating communications, using the following quotient: number of communications terminating to voicemail due to one or more network failures/total number of terminating communications. ### Claim 13 (depends on 12) The method according to claim 12, wherein the number of communications terminating to voicemail due to one or more network failures includes the communication records, in the data associated with communications in the wireless telecommunications network, that include: one or more identifiers that a communication was forwarded to voicemail; and that also include one or more identifiers specifying that the terminating subscriber was not reachable in the wireless telecommunications network. ### Claim 14 (depends on 10) The method according to claim 10, wherein the wireless telecommunications network utilizes one or more of the following wireless communication protocols: 4G, LTE, or 5G. ### Claim 15 (depends on 10) The method according to claim 10, wherein the action comprises communicating an alert that the rate of communications terminating to voicemail due to one or more network failures exceeds the threshold value. ### Claim 16 (depends on 10) The method according to claim 10, further comprising displaying a graphical representation of the rate of communications terminating to voicemail due to one or more network failures. ### Claim 17 (depends on 16) The method according to claim 16, wherein the graphical representation provides an indication that the rate of communications terminating to voicemail due to one or more network failures exceeds the threshold value. ### Claim 18 (depends on 10) The method according to claim 10, further comprising identifying a subset of communications terminating to voicemail due to one or more network failures that exhibit one or more of the same or similar attributes. ### Claim 19 (depends on 18) The method according to claim 18, wherein the one or more of the same or similar attributes comprise: geographical region, device manufacturer, device type, device operating system, location information associated with a device, a cell site, a network node, one or more radios at a cell site, radio manufacturer, network node software, or a combination thereof. ### Claim 20 A computerized system comprising: one or more processors; and a non-transitory computer storage media storing computer-useable instructions that, when used by the one or more processors, cause the one or more processors to: by a network analyzer: receive data associated with communications in a wireless telecommunications network, wherein the data associated with communications in the wireless telecommunications network comprises charging data records; determine a rate of communications terminating to voicemail due to one or more network failures; determine that the rate of communications terminating to voicemail due to one or more network failures exceeds a threshold value; communicate an alert indicating that the rate of communications terminating to voicemail due to one or more network failures exceeds the threshold value; and adjust one or more network settings to correct the one or more network failures exceeding the threshold associated with the rate of communications terminating to voicemail.