Pattern addressing for session-based DASH operations

A system for session-based dynamic adaptive streaming over HTTP (DASH) operations, comprising circuitry configured to:

• transmit a media presentation description (MPD) referencing a session-based description (SBD) and indicating a key name during a media access session, the MPD describing a media presentation of media content partitioned into a sequence of segments;
• transmit the SBD referenced by the MPD, the SBD including a first repeating pattern element that includes a first sequence of timed key values of the key name, the first repeating pattern element indicating that the first sequence of the timed key values of the key name is repeated along a timeline or an orderline;
• receive a request for a segment of the sequence of segments from a DASH client, the request including a pair of the key name and a first key value, wherein the first key value of the key name corresponding to a timing or a segment number of the segment of the sequence of segments is indicated in the first repeating pattern element in the SBD;
• and
• transmit the requested segment of the sequence of segments to the DASH client in response to the received request for the segment of the sequence of segments.

At least one non-transitory computer-readable medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform a method of session-based dynamic adaptive streaming over HTTP (DASH) operations, the method comprising:

• transmitting a media presentation description (MPD) referencing a session-based description (SBD) and indicating a key name during a media access session, the MPD describing a media presentation of media content partitioned into a sequence of segments;
• transmitting the SBD referenced by the MPD, the SBD including a first repeating pattern element that includes a first sequence of timed key values of the key name, the first repeating pattern element indicating that the first sequence of the timed key values of the key name is repeated along a timeline or an orderline;
• receiving a request for a segment of the sequence of segments from a DASH client, the request including a pair of the key name and a first key value, wherein the first key value of the key name corresponding to a timing or a segment number of the segment of the sequence of segments is indicated in the first repeating pattern element in the SBD;
• and
• transmitting the requested segment of the sequence of segments to the DASH client in response to the received request for the segment of the sequence of segments.