Systems and methods for modeling quality of service for streaming media
View Patent ↗A monitoring device includes a video buffer model and a user model. The video buffer model monitors a media program streaming across a network to a media client for perceivable transmission impairments. The user model reflects user dissatisfaction due to types of perceivable transmission impairments and timing, duration, and frequency of perceivable transmission impairments so as to estimate a quality of experience of the media program. The parametric model can include one or more parameterized functions, and a set of parameters used in at least one of the one or more of the parameterized functions at a point in time during the streaming of the media program can be based on a type of perceivable transmission impairment associated with the point in time.
1. A computer system comprising:
a monitoring device coupled to a network, wherein the monitoring device includes:
a memory configured to store instructions; and
at least one computer processor disposed in communication with the memory, wherein the at least one computer processor upon execution of the instructions is configured to:
monitor a media program streaming across the network to a media client for perceivable transmission impairments; and
provide a model to reflect user dissatisfaction based on types of perceivable transmission impairments and timing, duration, and frequency of perceivable transmission impairments to estimate a quality of experience of the media program, the model implements a parametric function providing a behavioral model of a user that reflects user satisfaction decreases during perceivable transmission impairments and increases frequency of perceivable transmission impairments to estimate a quality of experience of the media program, the model implements a parametric function providing a behavioral model of a user that reflects user satisfaction decreases during perceivable transmission impairments and increases during uninterrupted playback as a function of time, wherein the parameterized function comprises a piecewise function having a plurality of subfunctions and the model transitions through the plurality of subfunctions based on one or more thresholds defined by at least one parameter of a set of parameters including a cosine subfunction and linear subfunction, wherein the model further reflects a user expectation context for streaming the media program, the user expectation context comprising a duration of the media program and at least one of: a device type of the media client, a network connection type of the network; and a service type associated with the media program.
2. The system of claim 1 , wherein:
the model comprises one or more parameterized functions; and
a set of parameters used in at least one of the one or more of the parameterized functions at a point in time during the streaming of the media program is based on a type of perceivable transmission impairment associated with the point in time.
3. The system of claim 2 , wherein the set of parameters is further based on a user expectation context for streaming the media program, the user expectation context comprising at least one of: a device type of the media client, a network connection type of the network; a service type associated with the media program; and a duration of the media program.
4. The system of claim 1 , wherein the types of perceivable transmission impairments comprise an initial buffering type and an initial rebuffering type.
5. The system of claim 4 , wherein the model reflects greater user dissatisfaction due to a perceivable transmission impairment of the initial rebuffering type than a perceivable transmission impairment of the initial buffering type.
6. The system of claim 4 , wherein the types of perceivable transmission impairments further comprise a subsequent rebuffering type.