One-way voice call detection

A system comprising:

• one or more processing devices;
• and
• one or more storage devices storing instructions that, when executed by the one or more processing devices, cause the one or more processing devices to perform operations comprising:
• receiving information pertaining to voice data packets exchanged for an audio call between a first mobile device and a second mobile device connected over a cellular network, wherein the information pertaining to the voice data packets is captured using a packet probe device configured to monitor data transfer at an interface between a first network device comprising a cellular core gateway and a second network device comprising an IP Multimedia Subsystem (IMS) node;
• analyzing the information pertaining to the voice data packets to obtain (i) a set of first metrics characterizing a first flow of voice data packets from the first mobile device to the second mobile device and (ii) a set of second metrics characterizing a second flow of voice data packets from the second mobile device to the first mobile device;
• based at least on a subset of the first metrics and a subset of the second metrics, identifying that the first flow of voice data packets is disrupted over a particular time period of a threshold duration, and the second flow of voice data packets is substantially undisrupted over the particular time period;
• identifying the particular time period as a one-way audio period, based on identifying that the first flow of voice data packets is disrupted over the particular time period and the second flow of voice data packets is substantially undisrupted over the particular time period, wherein the one-way audio period corresponds to a one-way call condition characterized by disruption of voice data packet flow in only one direction;
• and
• altering at least one parameter of the cellular network comprising at least one of a radio link failure (RLF) timer or a radio resource control (RRC) reestablishment rate based at least on the identification of the one-way audio period.

One or more non-transitory computer-readable storage media encoded with computer program instructions that, when executed by one or more computers, cause the one or more computers to perform operations comprising:

• receiving information pertaining to voice data packets exchanged for an audio call between a first mobile device and a second mobile device connected over a cellular network, wherein the information pertaining to the voice data packets is captured using a packet probe device configured to monitor data transfer at an interface between a first network device comprising a cellular core gateway and a second network device comprising an IP Multimedia Subsystem (IMS) node;
• analyzing the information pertaining to the voice data packets to obtain (i) a set of first metrics characterizing a first flow of voice data packets from the first mobile device to the second mobile device and (ii) a set of second metrics characterizing a second flow of voice data packets from the second mobile device to the first mobile device;
• based at least on a subset of the first metrics and a subset of the second metrics, identifying that the first flow of voice data packets is disrupted over a particular time period of a threshold duration, and the second flow of voice data packets is substantially undisrupted over the particular time period;
• identifying the particular time period as a one-way audio period, based on identifying that the first flow of voice data packets is disrupted over the particular time period and the second flow of voice data packets is substantially undisrupted over the particular time period, wherein the one-way audio period corresponds to a one-way call condition characterized by disruption of voice data packet flow in only one direction;
• and
• altering at least one parameter of the cellular network comprising at least one of a radio link failure (RLF) timer or a radio resource control (RRC) reestablishment rate based at least on the identification of the one-way audio period.