# US 2019/0173737 A1 · A Method For Determining A Sequence Of Events, A Determination Device For Determining A Sequence Of Events, And A Providing Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173737 A1 - Document ID: US20190173737A1 - Status: Published application - Kind: A1 - Application number: 16/323,831 - Filed: 2016-08-24 - Published: 2019-06-06 - Earliest claimed: 2016-08-24 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: András Rácz; Norbert Reider - Web page: https://patentgrep.com/patent/US20190173737A1 ## CPC - H04L 41/0636: {based on a decision tree analysis} - H04L 41/0631: using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04L 41/5009: Determining service level performance parameters or violations of service level contracts, e.g. violations of agreed response time or mean time between failures [MTBF] - 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 The present invention relates to a method and a device for analyzing and determining a root cause based on a sequence of events including a first event in a mobile communication network system. In particular, the present invention provides a method for determining a sequence of events including a first event in a mobile communication network system, comprising the steps of identifying at least one second event before and/or after the first event; determining a probability of an occurrence of each second event before and/or after the first event,—determining a probability of an occurrence of each second event before and/or after each other second event; and determining a sequence of first and second events with the highest probability. ## Claims ### Claim at position 1 1-17. (canceled) ### Claim 18 A method for determining, in a determination device, a sequence of events including a first event in a mobile communication network system, the method comprising the determination device: identifying at least one second event before and/or after the first event; determining a probability of an occurrence of each second event before and/or after the first event; determining a probability of an occurrence of each second event before and/or after each other second event; and determining a sequence of first and second events with the highest probability; wherein the first and/or second events are provided by a providing device. ### Claim 19 (depends on 18) The method of claim 18, further comprising determining a cause for the first event based on the sequence of first and second events with the highest probability. ### Claim 20 (depends on 18) The method of claim 18, wherein the first event is a negative type of event and the second events are each a negative or positive type of event. ### Claim 21 (depends on 20) The method of claim 20, wherein the negative type and/or positive type of event is one of a predetermined relevant type. ### Claim 22 (depends on 20) The method of claim 20, wherein the negative type of event is: an abnormal call termination, a performance indicator event, and/or a failed process event. ### Claim 23 (depends on 18) The method of claim 18, wherein the at least one second event is identified within a predetermined time before and/or after the first event. ### Claim 24 (depends on 18) The method of claim 18, wherein the probability of the occurrence of the at least one second event before the first event is determined separately from the probability of the occurrence of the at least one second event after the first event. ### Claim 25 (depends on 18) The method of claim 18, wherein the probability of the occurrence of the at least one second event before the first event is determined differently from the probability of the occurrence of the at least one second event after the first event. ### Claim 26 (depends on 18) The method of claim 18, wherein the sequence of first and second events is determined including all combinations of first and second events. ### Claim 27 (depends on 18) The method of claim 18, wherein the sequence of first and second events is determined including one specific order of first and second events. ### Claim 28 (depends on 18) The method of claim 18: wherein the negative type of the first and/or second event is: a failed connection set up between a base station and a user terminal; a failed connection set up between a base station and a network node; a failed hand over of a user terminal between base stations; a failed signal transfer for communication; or a failed signal transfer for controlling a base station; and wherein the positive type of the second event is: a successful connection set up between a base station and a user terminal; a successful connection set up between a base station and a network node; a successful hand over of a user terminal between base stations; a successful signal transfer for communication; or a successful signal transfer for controlling a base station. ### Claim 29 A determination device for determining a sequence of events including a first event in a mobile communication network system, the determination device comprising: processing circuitry; memory containing instructions executable by the processing circuitry whereby the determination device is operative to: to identify at least one second event before and/or after the first event; determine a probability of an occurrence of each second event before and/or after the first event; determine a probability of an occurrence of each second event before and/or after each other second event; and determine a sequence of first and second events with the highest probability. ### Claim 30 (depends on 29) The determination device of claim 29, wherein the instructions are such that the determination device is operative to determine a cause for the first event based on the sequence of first and second events with the highest probability. ### Claim 31 A providing device in a communication network system, the providing device comprising: processing circuitry; memory containing instructions executable by the processing circuitry whereby the providing device is operative to: provide information indicating a first and/or second event to the communication network system or an external entity processing the first and/or second event to determine a cause of the first event. ### Claim 32 (depends on 31) The providing device of claim 31, wherein the providing device is: a mobile terminal, a base station, a network node, a network entity, and/or external equipment associated with the communication network system. ### Claim 33 A non-transitory computer readable recording medium storing a computer program product for determining, in a determination device, a sequence of events including a first event in a mobile communication network system, the computer program product comprising software instructions which, when run on processing circuitry of the determination device, causes the determination device to: identify at least one second event before and/or after the first event; determine a probability of an occurrence of each second event before and/or after the first event; determine a probability of an occurrence of each second event before and/or after each other second event; and determine a sequence of first and second events with the highest probability; wherein the first and/or second events are provided by a providing device.