# US 11,451,602 B2 · Methods and apparatuses for dynamic adaptive streaming over HTTP > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,602 B2 - Document ID: US11451602B2 - Status: Granted - Kind: B2 - Application number: 17/477,315 - Filed: 2021-09-16 - Published: 2022-07-07 - Granted: 2022-09-20 - Earliest claimed: 2021-01-06 - Assignees: Tencent America LLC - Applicants: Tencent America LLC - Inventors: Iraj Sodagar - Web page: https://patentgrep.com/patent/US11451602B2 ## CPC - H04L 65/61: for supporting one-way streaming services, e.g. Internet radio - H04N 21/26258: {for generating a list of items to be played back in a given order, e.g. playlist, or scheduling item distribution according to such list (retrieval of multimedia data based on playlists G06F16/40)} - H04L 65/1108: Web based protocols, e.g. webRTC - H04L 65/612: for unicast - H04L 67/02: based on web technology, e.g. hypertext transfer protocol [HTTP] - H04L 67/146: Markers for unambiguous identification of a particular session, e.g. session cookie or URL-encoding - H04N 21/435: Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream - H04N 21/4516: {involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available} - H04N 21/4524: {involving the geographical location of the client (retrieval from the Internet by querying based on geographical locations G06F16/9537; systems specially adapted for using geographical information in broadcast systems H04H60/70; protocols in which the network application is adapted for the location of the user terminal in communication control or processing H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00)} - H04N 21/4532: {involving end-user characteristics, e.g. viewer profile, preferences (monitoring of user activities for profile generation for accessing a video database G06F16/739; user profiles in network data switching protocols H04L67/306; processing of user preferences or user profiles in wireless networks H04W8/18)} - H04N 21/6582: {Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number (arrangements where receivers interact with the broadcast H04H20/38)} - H04N 21/84: Generation or processing of descriptive data, e.g. content descriptors {(systems specially adapted for using meta-information in broadcast systems H04H60/73)} - H04N 21/8456: {by decomposing the content in the time domain, e.g. in time segments} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for receiving media data. One apparatus includes processing circuitry that receives a media presentation description (MPD) file that includes an essential property descriptor for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH) operation. The essential property descriptor indicates a session-based description (SBD) file that includes one or more key-value pairs dynamically generated by a local SBD session controller. Each key of the one or more key-value pairs indicates service information of a different service of a local device. The processing circuitry modifies a uniform resource locator (URL) based on the SBD file. The processing circuitry acquires a resource from a remote server based on the modified URL. ## Claims ### Claim 1 A method of receiving media data, comprising: receiving a media presentation description (MPD) file that includes an essential property descriptor for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH) operation, the essential property descriptor indicating an address of a session-based description (SBD) file, the SBD file including one or more key-value pairs dynamically generated by a local SBD session controller, each key of the one or more key-value pairs indicating service information of a different service of a local device; obtaining the SBD file based on the address of the SBD file indicated by the essential property descriptor; modifying a uniform resource locator (URL) based on the obtained SBD file; and acquiring a resource from a remote server based on the modified URL. ### Claim 2 (depends on 1) The method of claim 1, wherein the address is included in the essential property descriptor and is a local address of the SBD file. ### Claim 3 (depends on 1) The method of claim 1, wherein the service information includes at least one of device information, user information, application information, or location information. ### Claim 4 (depends on 1) The method of claim 1, further comprising: in response to a change in the service information of the local device, updating one of the one or more key-value pairs corresponding to the service information of one of the services of the local device. ### Claim 5 (depends on 1) The method of claim 1, wherein the modifying includes modifying at least one of a host part, a port part, a path part, or a fragment part of the URL based on the SBD file. ### Claim 6 (depends on 1) The method of claim 1, wherein the modifying includes adding a query to the URL based on the SBD file. ### Claim 7 (depends on 1) The method of claim 1, wherein the URL is one of a media segment request, an MPD request, an extensible markup language linking language (XLink) resolution request, a callback request that is triggered by a callback event, a chaining request for a chained-to MPD, or a fallback request for a fallback MPD. ### Claim 8 (depends on 1) The method of claim 1, wherein a type of the SBD file is a dynamic type and the one or more key-value pairs are arranged in a time-based order. ### Claim 9 An apparatus for receiving media data, the apparatus comprising: processing circuitry configured to: receive a media presentation description (MPD) file that includes an essential property descriptor for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH) operation, the essential property descriptor indicating an address of a session-based description (SBD) file, the SBD file including one or more key-value pairs dynamically generated by a local SBD session controller, each key of the one or more key-value pairs indicating service information of a different service of a local device; obtain the SBD file based on the address of the SBD file indicated by the essential property descriptor; modify a uniform resource locator (URL) based on the obtained SBD file; and acquire a resource from a remote server based on the modified URL. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the address is included in the essential property descriptor and is a local address of the SBD file. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the service information includes at least one of device information, user information, application information, or location information. ### Claim 12 (depends on 9) The apparatus of claim 9, wherein the processing circuitry is further configured to: in response to a change in the service information of the local device, update one of the one or more key-value pairs corresponding to the service information of one of the services of the local device. ### Claim 13 (depends on 9) The apparatus of claim 9, wherein the processing circuitry is further configured to: modify at least one of a host part, a port part, a path part, or a fragment part of the URL based on the SBD file. ### Claim 14 (depends on 9) The apparatus of claim 9, wherein the processing circuitry is further configured to: add a query to the URL based on the SBD file. ### Claim 15 (depends on 9) The apparatus of claim 9, wherein the URL is one of a media segment request, an MPD request, an extensible markup language linking language (XLink) resolution request, a callback request that is triggered by a callback event, a chaining request for a chained-to MPD, or a fallback request for a fallback MPD. ### Claim 16 (depends on 9) The apparatus of claim 9, wherein a type of the SBD file is a dynamic type and the one or more key-value pairs are arranged in a time-based order. ### Claim 17 A non-transitory computer-readable storage medium storing instructions which, when executed by a computer for receiving media data, cause the computer to perform: receiving a media presentation description (MPD) file that includes an essential property descriptor for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH) operation, the essential property descriptor indicating an address of a session-based description (SBD) file, the SBD file including one or more key-value pairs dynamically generated by a local SBD session controller, each key of the one or more key-value pairs indicating service information of a different service of a local device; obtaining the SBD file based on the address of the SBD file indicated by the essential property descriptor; modifying a uniform resource locator (URL) based on the obtained SBD file; and acquiring a resource from a remote server based on the modified URL. ### Claim 18 (depends on 17) The non-transitory computer-readable storage medium of claim 17, wherein the address is included in the essential property descriptor and is a local address of the SBD file. ### Claim 19 (depends on 17) The non-transitory computer-readable storage medium of claim 17, wherein the service information includes at least one of device information, user information, application information, or location information. ### Claim 20 (depends on 17) The non-transitory computer-readable storage medium of claim 17, wherein the stored instructions cause the computer to perform: in response to a change in the service information of the local device, updating one of the one or more key-value pairs corresponding to the service information of one of the services of the local device.