Content for TS 26.501 Word version: 18.3.1
4.10 3GPP Service URL handling
4.10.1 General
4.10.2 Baseline parameters of 3GPP Service URL for 5G Media Streaming
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4.10 3GPP Service URL handling |R18| p. 64
4.10.1 General p. 64
Where there is a facility for an application or service to launch a UE function on the same UE via a URL request, it is convenient to use such a mechanism to launch media session handling for a 5G Media Streaming session. In this case, the Media Session Handler can be launched implicitly as a result of a request for a URL with a prefix that matches a value previously registered with the UE Operating System by the Media Session Handler. Media streaming may also be launched as a by-product of the URL request by embedding a Media Entry Point in the URL. This enables 5G Media Streaming sessions to be launched by any UE application (not just a 5GMS-Aware Application), or from a link in a web page.
If the Media Session Handler is not available on the UE, or if the Media Session Handler is not able to resolve the service, then the 3GPP Service URL shall resolve to an endpoint on the 5GMS AF which may respond to the URL request, for example by redirecting the application to a Media Entry Point.
This clause defines the baseline requirements for a 3GPP Service URL that can be used to activate a 5G Media Streaming session in line with step 5 of clause 5.1 (for downlink Media Streaming), and steps 4 and 6 of clause 6.1 (for uplink Media Streaming). The detailed baseline procedure for handling these 3GPP Service URLs is defined in clause 9.
4.10.2 Baseline parameters of 3GPP Service URL for 5G Media Streaming p. 64
The parameters in Table 4.10.2-1 may be included explicitly or implicitly in the 3GPP Service URL when it is used to launch a 5G Media Streaming session:
| Parameter | Use | Description |
|---|---|---|
| Service type | M | Uniquely indicating either downlink 5G Media Streaming or uplink 5G Media Streaming. |
| External application identifier | M | A globally unique application identifier nominated by the 5GMS Application Provider that resolves to a Provisioning Session in the 5GMS System. |
| 5GMS AF endpoint addresses | 0..N | Endpoint address(es) for 5GMS AF instance(s) to be used by the Media Session Handler at reference point M5. Any of the provided addresses may be used for media session handling of this 3GPP Service URL. Present only in the case where the 5GMS AF is deployed outside the Trusted DN. |
| Media Entry Point URLs | 0..N | URLs of Media Entry Points on a 5GMS AS to be launched by the Media Session Handler after successful initiation of media session handling and establishment of communication with the Media Stream Handler (Media Player or Media Streamer). |
| Acceptable media types | C | Indicating a set of media types acceptable to the 5GMS-Aware Application for a 5G Media Streaming session. Present if no Media Entry Point is provided. This value is used by the Media Session Handler to select the appropriate Media Entry Point provided by the 5GMS AF. |
| Acceptable media profiles | C | Indicating a set of acceptable conformance profiles for a 5G Media Streaming session. Present if no Media Entry Point is provided. This value is used by the Media Session Handler to select the appropriate Media Entry Point provided by the 5GMS AF. |
The 3GPP Service URL for 5G Media Streaming may also include information to support handling of eMBMS or MBS delivery.
