Content for  TS 23.558  Word version:  19.3.0

8.14.3.1  General  p. 237

8.14.3.2  AC registration request  p. 237

Information element	Status	Description
AC profile	M	AC profile of the AC sending the registration request.
Security credentials	M	Security credentials of the AC sending the registration request.
List of EAS characteristics	O	List of EAS characteristics as described in EAS discovery filters (see Table 8.5.3.2-2).
List of requested EEC services	O	One or more EEC services requested by the AC e.g., EAS discovery, ACR.
List of ECS information	O	One or more ECS configuration information.

8.14.3.3  AC registration response  p. 237

Information element	Status	Description
Successful response	O	Indicates that the registration request was successful.
> Registration ID	M	Identifier of the AC registration.
> List of allowed EEC services	M	List of all the EEC services AC is authorized to use.
> Expiration time	O	Indicates the expiration time of the registration. To maintain an active registration status, a registration update is required before the expiration time.
Failure response	O	Indicates that the registration request failed.
> Cause	M	Provides the cause for registration request failure.

8.14.3.4  AC registration update request  p. 238

Information element	Status	Description
Registration ID	M	AC registration identifier provided by the EEC during AC registration.
Security credentials	M	Security credentials of the AC sending the registration update request.
AC profile	O	AC profile of the AC sending the registration update request.
List of EAS characteristics	O	List of EAS characteristics as described in EAS discovery filters (see Table 8.5.3.2-2).
List of requested EEC services	O	One or more EEC services requested by the AC e.g., EAS discovery, ACR.
List of ECS information	O	One or more ECS configuration information.

8.14.3.5  AC registration update response  p. 238

Information element	Status	Description
Successful response	O	Indicates that the registration request was successful.
> List of allowed EEC services	M	List of all the EEC services AC is authorized to use.
> Expiration time	O	Indicates the expiration time of the registration. To maintain an active registration status, a registration update is required before the expiration time.
Failure response	O	Indicates that the registration request failed.
> Cause	M	Provides the cause for registration request failure.

8.14.3.6  AC deregistration request  p. 238

Information element	Status	Description
Registration ID	M	AC registration identifier provided by the EEC during AC registration.
Security credentials	M	Security credentials of the AC sending the deregistration request.

8.14.3.7  AC deregistration response  p. 239

Information element	Status	Description
Successful response	O	Indicates that the deregistration request was successful.
Failure response	O	Indicates that the deregistration request failed.
> Cause	M	Provides the cause for deregistration request failure.

8.14.3.8  EAS discovery request  p. 239

Information element	Status	Description
AC profile	M	AC profile of the AC sending the registration request.
Security credentials	M	Security credentials of the AC.
List of EAS characteristics	O	List of EAS characteristics as described in EAS discovery filters (see Table 8.5.3.2-2).

8.14.3.9  EAS discovery response  p. 239

Information element	Status	Description
Successful response	O	Indicates that the EAS discovery request was successful.
> Discovered EAS list	O	List of discovered EAS(s). Each element includes the information described below.
>> EAS profile	M	Profile of the EAS. Each element is described in clause 8.2.4.
>> Lifetime	O	Time interval or duration during which the information elements in the EAS profile is valid and supposed to be cached in the AC (e.g. time-to-live value for an EAS Endpoint).
Failure response	O	Indicates that the EAS discovery request failed.
> Cause	O	Indicates the cause of EAS discovery request failure.

8.14.3.10  ACR trigger request  p. 239

Information element	Status	Description
AC profile	M	AC profile for EEC to determine the target EAS.
Security credentials	M	Security credentials of the AC.
Requested ACR action	M	One of ACR detection or ACR initiation request actions.
S-EAS information	M	ID of the EAS to which the ACR request relates.
T-EAS information (NOTE)	O	AC provided target EAS information or AC provided target CAS information received from DNS query result.
NOTE: This IE may be included if the request is to initiate the ACR to EAS or CAS.

8.14.3.11  ACR trigger response  p. 240

Information element	Status	Description
Successful response	O	Indicates that the ACR request was successful and EEC is processing the requested ACR operation.
Failure response	O	Indicates that the ACR request failed.
> Cause	O	Indicates the cause of ACR request failure.

8.14.3.12  EEC services subscription request  p. 240

Information element	Status	Description
AC profile	M	AC profile of the AC requesting subscription.
Security credentials	M	Security credentials of the AC.
Notification details	M	Details on how the EEC can notify the AC.
Required EEC services	M	EEC handled services required by the AC.
> EAS discovery	O	Indicates that AC requires EEC to handle EAS discovery.
>> List of EAS characteristics	O	List of EAS characteristics as described in EAS discovery filters (see Table 8.5.3.2-2).
> EAS dynamic information	O	Indicates that the AC requires EAS dynamic information subscription.
>> List of EAS dynamic information filters	M	List of EAS dynamic information filters as described in Table 8.5.3.4-2.
> ACR	O	Indicates that the AC requires ACR related services for the following EASs.
>> List of S-EAS information	M	S-EAS information corresponding to the ACR operation.
>>> EASID	M	Identifier of the S-EAS to which the subscription relates.
>>> EAS endpoint	M	Endpoint of the S-EAS to which the subscription relates.
>>> ACR operation	O	Indicates if AC requires ACR monitoring or EEC managed ACR corresponding to each S-EAS.
>>> CAS information	O	AC provided target CAS information.

8.14.3.13  EEC services subscription response  p. 240

Information element	Status	Description
Successful response	O	Indicates that the EEC services subscription request was successful.
> Subscription ID	M	Subscription identifier corresponding to the subscription.
> Expiration time	O	Indicates the expiration time of the subscription. To maintain an active subscription, a subscription update is required before the expiration time.
> Confirmed EEC services	M	List of services EEC confirms to handle.
>> EAS discovery	O	Indicates that the EEC will handle EAS discovery.
>> EAS dynamic information	O	Indicates that the EEC will handle EAS dynamic information subscription.
>> ACR	O	Indicates that the EEC will handle ACR.
>>> List of S-EAS information	M	Information of the S-EASs EEC will handle.
>>>> EASID	M	Identifier of the S-EAS to which the subscription relates.
>>>> EAS endpoint	M	Endpoint of the S-EAS to which the subscription relates.
Failure response	O	Indicates that the subscription request failed.
> Cause	O	Indicates the cause of subscription request failure.

8.14.3.14  EEC services notification  p. 241

Information element	Status	Description
Subscription ID	M	Subscription identifier corresponding to the notification.
Notification details	M	Information related to the notification.
> EAS discovery	O	Indicates that the notification relates to EAS discovery.
>> List of EAS profiles	M	EAS profiles associated with the notification. Each element is described in clause 8.2.4.
>>> Lifetime	O	Time interval or duration during which the information in the EAS profile is valid and supposed to be cached in the AC (e.g. time-to-live value for an EAS Endpoint).
> EAS dynamic information	O	Indicates that the notification relates to EAS dynamic information subscription.
>> List of EAS profile	M	EAS profiles associated with the notification. Each element is described in clause 8.2.4.
>>> Lifetime	O	Time interval or duration during which the information in the EAS profile is valid and supposed to be cached in the AC (e.g. time-to-live value for an EAS Endpoint).
> ACR	O	Indicates that the notification relates to ACR.
>> List of S-EAS information	M	ACR operation information and information of the EAS to which the notification relates.
>>> EASID	M	Identifier of the S-EAS to which the subscription relates.
>>> EAS endpoint	M	Endpoint of the S-EAS to which the subscription relates.
>>> ACR detection	O	Indicates that the EEC detected a need for ACR.
>>> ACR decision	O	EEC's decision information related to an ACR detection.
>>> ACR execution status	O	Indicates the status of ACR execution.
>>>> Status	M	ACR status such as initiated, in-progress, complete, failed.
>>>> T-EAS information	O (NOTE)	Information of the T-EAS corresponding to the S-EAS.
>>>>> EASID	M	Identifier of the T-EAS to which an ACR has been performed.
>>>>> EAS endpoint	M	Endpoint address of the T-EAS to which an ACR has been performed.
>>>> Failure cause	O (NOTE)	ACR failure reason e.g. due to unavailability of suitable T-EES or T-EAS.
NOTE: "T-EAS information" IE shall be present only when the value of "Status" IE is other than failed. And "Failure cause" IE shall be present only when the value of "Status" is failed.

8.14.3.15  EEC services subscription update request  p. 242

Information element	Status	Description
Subscription ID	M	Subscription identifier corresponding to the update request.
Security credentials	M	Security credentials of the AC.
Notification details	O	Details on how the EEC can notify the AC.
Required EEC services	O	EEC handled services required by the AC.
> EAS discovery	O	Indicates that AC requires EEC to handle EAS discovery.
>> List of EAS discovery filters	M	List of EAS discovery filters as described in Table 8.5.3.2-2.
>>> Preferred ECSP list	O	Preferred ECSP list corresponding to each set of EAS discovery filters.
> EAS dynamic information	O	Indicates that the AC requires EAS dynamic information subscription.
>> List of EAS dynamic information filters	M	List of EAS dynamic information filters as described in Table 8.5.3.4-2.
> ACR	O	Indicates that the AC requires ACR related services for the following EASs.
>> List of S-EAS information	M	S-EAS information corresponding to the ACR operation.
>>> EASID	M	Identifier of the S-EAS to which the subscription relates.
>>> EAS endpoint	M	Endpoint of the S-EAS to which the subscription relates.
>>> ACR operation	O	Indicates if AC requires ACR monitoring or EEC managed ACR corresponding to each S-EAS.
>>> CAS information	O	AC provided target CAS information.

8.14.3.16  EEC services subscription update response  p. 243

Information element	Status	Description
Successful response	O	Indicates that the EEC services subscription update request was successful.
> Expiration time	O	Indicates the expiration time of the subscription. To maintain an active subscription, a subscription update is required before the expiration time.
> Confirmed EEC services	M	List of services EEC confirms to handle.
>> EAS discovery	O	Indicates that the EEC will handle EAS discovery.
>> EAS dynamic information	O	Indicates that the EEC will handle EAS dynamic information subscription.
>> ACR	O	Indicates that the EEC will handle ACR.
>>> List of S-EAS information	M	Information of the S-EASs EEC will handle.
>>> EASID	M	Identifier of the S-EAS to which the subscription relates.
>>> EAS endpoint	M	Endpoint of the S-EAS to which the subscription relates.
Failure response	O	Indicates that the subscription update request failed.
> Cause	O	Indicates the cause of subscription update request failure.

8.14.3.17  EEC services unsubscribe request  p. 243

Information element	Status	Description
Subscription ID	M	EEC services subscription identifier provided by the EEC during subscription.
Security credentials	M	Security credentials of the AC sending the EEC services unsubscribe request.

8.14.3.18  EEC services unsubscribe response  p. 244

Information element	Status	Description
Successful response	O	Indicates that the EEC services unsubscribe request was successful.
Failure response	O	Indicates that the EEC services unsubscribe request failed.
> Cause	M	Provides the cause for EEC services unsubscribe request failure.

8.14.3.19  UE ID request  p. 244

Information element	Status	Description
EAS ID list	M	List of EAS ID(s) the AC requires to know the associated AF-specific UEID(s) for.
Security credentials	M	Security credentials of the AC sending the UE ID request.

8.14.3.20  UE ID response  p. 244

Information element	Status	Description
Successful response	O	Indicates that the UE ID request was successful.
> UE ID list	M	List of all the Edge UE IDs or AF-specific UE IDs the AC asked for in the request and is authorized to use as per EAS ID(s).
>> UE ID	M	Edge UE ID or AF-specific UE ID.
>> UE ID type	M	Indication whether the UE ID is CN assigned AF-specific UE ID or Edge UE ID.
>> EAS ID	M	Associated EAS ID.
Failure response	O	Indicates that the UE ID request failed.
> Cause	M	Provides the cause for UE ID request failure.

8.14.4.1  General  p. 245

API Name	API Operations	Operation Semantics	Consumer(s)
Eeec_ACRegistration	Request	Request/ Response	AC
	Update
	Deregister
Eeec_EASDiscovery	Request	Request/ Response	AC
Eeec_ACRTrigger	Request	Request/ Response	AC
Eeec_Services	Subscribe	Subscribe/ Notify	AC
	Notify
	UpdateSubscription
	Unsubscribe
Eeec_UEId	Request	Request/ Response	AC

8.14.4.2  Eeec_ACRegistration API  p. 245

8.14.4.3  Eeec_EASDiscovery API  p. 246

8.14.4.4  Eeec_ACRTrigger API  p. 246

8.14.4.5  Eeec_Services API  p. 246

8.14.4.6  Eeec_UEId API  p. 247