A.2 Resource representation and APIs for event triggered network slice configuration
24.5493GPPNetwork slice capability enablement- Service Enabler Architecture Layer for Verticals (SEAL)Protocol specificationRelease 17Stage 3TS
A.2.1 ETN_Configuration API
A.2.1.1 API URI
The HTTP URIs used in HTTP requests from SNSCE-C towards the SNSCE-S shall have the Resource URI structure as defined in clause B.2.1.2.2.2 which is {apiRoot}/su_nsc/<apiVersion>/val-services/{valServiceId}/configurations/{ConfigurationId}, where
a) {valServiceId} is set to the value of the "VAL Service ID" of the VAL application; and
b) {ConfigurationId} is set to the identity of the configuration.
A.2.1.2 Resources
A.2.1.2.1 Overview
The Resource URI structure of the ETN_Configuration API is as shown in Figure A.2.1.2.1-1:
Figure A.2.1.2.1-1: Resource URI structure of the ETN_Configuration API
Table A.2.1.2.1-1 provides an overview of the resources and applicable HTTP method.
Table A.2.1.2.1-1: Resources and method overview
Resource name |
Resource URI |
HTTP method |
Description |
Configuration |
/val-services/{valServiceId}/configurations/{configurationId} |
PUT (NOTE) |
Performs configuration. |
NOTE: In this release, the only configuration is the slice adaptation as described in 3GPP TS 23.434 [2]. |
A.2.1.2.2 Resource: Configuration
A.2.1.2.2.1 Description
The Configuration resource allows an SNSCE-C a specific configuration identified by a configuration ID, to send an HTTP request containing:
a) a list of one or more VAL UEs;
b) a requested S-NSSAI;
c) optionally a requested DNN; and
d) optionally a requested configuration cause,
for a specific VAL service identified by a VAL service ID, toward a SNSCE-S to perform a network triggered slice configuration for the list of one or more VAL UEs for that specific VAL service.
NOTE: In this release, S-NSSAI and DNN are the only used route selection descriptors of the URSP rules described in 3GPP TS 24.526 [3].
A.2.1.2.2.2 Resource Definition
The SNSCE-C uses the parameters shown in table A.2.1.2.2.2-1 to communicate with the SNSCE-S in order to trigger a network slice configuration for one or more VAL UEs within a VAL service.
Table A.2.1.2.2.2-1: Client side parameters for network slice configuration trigger
Parameter |
Description |
VAL UE List |
REQUIRED. Represents a space-separated list of VAL UE Ids within a given VAL service, for which a given network slice configuration trigger applies. |
Requested |
REQUIRED. The new S-NSSAI which is requested. |
Requested DNN |
OPTIONAL. The new DNN which is requested. |
Configuration cause |
OPTIONAL. Indicates the cause for the configuration. |
Annex B (normative):
CoAP resource representation and encoding