Content for TR 26.942 Word version: 19.0.0
7.5 Solution #4: Energy-related information exposure from UE
7.5.1 Key Issue mapping
7.5.2 Functional description
7.5.2.1 Introduction
7.5.2.2 UE energy-related information collection and reporting functionality
7.5.3 Procedures
7.5.4 Impacts on existing services, entities and interfaces
7.5.4.1 Direct Data Collection Client
7.5.4.2 Data Collection AF
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7.5 Solution #4: Energy-related information exposure from UE p. 41
7.5.1 Key Issue mapping p. 41
This Candidate Solution addresses Key Issue #1.
7.5.2 Functional description p. 41
7.5.2.1 Introduction p. 41
This Candidate Solution to Key Issue #1 proposes potential methods for collecting energy-related information on the UE and subsequently reporting it to the network, enhancements to the entities involved in obtaining relevant information, and the impact of them on taking into consideration the media context (e.g., the 5G Media Streaming System defined in TS 26.501, 5G Multicast-Broadcast User Services as defined in TS 26.502, the Real-time Media Communication System defined in TS 26.506, split rendering Media Session Enabler as specified in TS 26.565, etc. including UE-related energy information exposure.
7.5.2.2 UE energy-related information collection and reporting functionality p. 42
7.5.2.2.1 Generic UE energy-related information collection and reporting p. 42
Clause 6.2.8 of TS 23.288 envisages a set of high-level procedures by which data is collected by a Network Data Analytics Function (NWDAF) from UE Application(s) via an intermediary Direct Data Collection Client residing in the UE and an Application Function residing in the Data Network that provides an Event Exposure service to event consumers. A reference architecture satisfying these requirements in defined in TS 26.531.
To obtain and maintain the UE energy-related information, a new generic functionality in the UE called the Energy-Related Information Collection and Reporting entity is defined within the Direct Data Collection Client as illustrated in Figure 7.5.2.2.1-1. This entity is responsible for collecting and reporting energy-related information in the UE.
Figure 7.5.2.2.1-1: UE energy information handler entity within generic Direction Data Collection Client
(⇒ copy of original 3GPP image)
(⇒ copy of original 3GPP image)
Based on the generic architecture for UE data collection, reporting and event exposure defined in TS 26.531, Figure 7.5.2.2.1-1 shows different interfaces between the UE and the Data Network, including the new UE Energy-Related Information Collection and Reporting functionality in the Direct Data Collection Client. In this case, UE energy-related information is reported to the Data Collection AF at reference point R2 for onward exposure to the NWDAF (at reference point R5) or to the Application Service Provider's Event Consumer AF (at reference point R6).
As described in clause 4.1 of TS 26.531, the Data Collection AF is responsible for receiving data reports -the scope of which is extended by this candidate solution to include energy-related information reports - from UEs pertaining to a particular UE data domain, for processing the UE data contained in those reports, and for exposing them to subscribed event consumers in the form of events.
7.5.2.2.2 Instantiation of UE energy-related information collection and reporting in the 5G Media Streaming architecture p. 43
When the Direct Data Collection Client is instantiated in the 5G Media Streaming System per clause 4.7.1 of TS 26.501, the UE Energy Related-Information Collection and Reporting functionality is a subfunction of the Media session Handler and plays the role of UE energy information collection and reporting to the Data Collection AF instantiated inside the 5GMS AF. This instantiation in the 5GMS architecture is illustrated in Figure 7.5.2.2.2-1.
Figure 7.5.2.2.2-1: UE energy information handler entity instantiated within 5GMS Media Session Handler
(⇒ copy of original 3GPP image)
(⇒ copy of original 3GPP image)
7.5.3 Procedures p. 44
The high-level procedure for data collection and reporting, including energy-related information is the same as that defined in clause 5.1 of TS 26.531 and the detailed call flow for reporting to the Data Collection AF is the same as that defined in clause 5.5 of TS 26.531 except the UE data report includes energy-related information.
Figure 7.5.3-1: High-level procedures for UE energy-related data reporting and exposure phase
(⇒ copy of original 3GPP image)
(⇒ copy of original 3GPP image)
As specified in clause 6.2.8.2.1 of TS 23.288, both the direct reporting procedure and indirect reporting procedure are required to be supported. The indirect reporting procedure may be used when a Direct Data Collection Client is not available in the UE or when the Indirect Data Collection Client needs to modify the collected UE data to satisfy the requirements of its data collection and reporting configuration.
Steps 1 to 12 are the same as those in clauses 5.2, 5.3, 5.4 of TS 26.531. The three different data collection clients then proceed as follows, with differences from the baseline call flow highlighted in boldface:
Step 13.
In response to receiving a data report:
If present in the instantiation, the UE Application reports data to the Direct Data Collection Client according to the configuration provided in step 10 of clause 5.4 of TS 26.531 for inclusion in a data report including energy-related information. The UE application may instruct the Direct Data Collection Client to prioritise immediate delivery of a UE data report including per-application UE energy-related information to the Data Collection AF.
Step 14.
The Direct Data Collection Client may submit a data report including per-application UE energy-related information to the Data Collection AF via reference point R2 by invoking the Ndcaf_DataReporting service defined in TS 26.531 and specified in TS 26.532. The Direct Data Collection Client may indicate that the data report includes UE data requiring expedited processing by the Data Collection AF.
Step 15.
The UE Application may send application-specific data reporting including per-application UE energy-related information to the Application Service Provider.
Step 16.
...and the Indirect Data Collection Client may, as a result, submit a data report including per-application UE energy-related information to the Data Collection AF by invoking the Ndcaf_DataReporting service defined in TS 26.531 and specified in TS 26.532.
Step 17.
The AS may submit a data report to the Data Collection AF by invoking the Ndcaf_DataReporting service defined in the present document and specified in TS 26.532.
Step 18.
Reception of a data report by the Data Collection AF may result in an event being exposed to subscribed event consumers:
The Data Collection AF processes the per-application UE energy-related information in the data report.
Step 19.
The Data Collection AF may expose a UE energy consumption event to the NWDAF by invoking the Naf_EventExposure_Notify service operation on the latter, as defined in clause 5.2.19.2.4 of TS 23.502.
Step 20.
The Data Collection AF may expose a UE energy consumption event to the Event Consumer AF by invoking the Naf_EventExposure_Notify service operation on the latter, as defined in clause 5.2.19.2.4 of TS 23.502.
7.5.4 Impacts on existing services, entities and interfaces p. 45
7.5.4.1 Direct Data Collection Client p. 45
- Collect and report per-application UE energy-related information to the Data Collection AF according to the procedures described in clause 7.2.3 of the present document.
7.5.4.2 Data Collection AF p. 45
- Expose UE energy-related information events according to the procedures described in clause 7.2.3 of the present document.
