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TR 22.810
Study of enhanced Call Information Presentation

V13.0.0 (Wzip)  2014/10  8 p.
Rapporteur:
Miss Li, XiaofanChina Mobile Com. Corporation

Content for  TR 22.810  Word version:  13.0.0

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0  IntroductionWord‑p. 4

Supplementary services such as CLIP, CNAP and OIP for CS and IMS network provide the calling party's number/name to the called party, which is useful especially when subscribers are receiving calls from strangers. However, with the uptake of smart phones, a number of "calling information presentation" OTTs have been introduced that can realize exchange of personal information (including name, portrait, signature, etc.) between the calling and the called party on call setup. These types of OTTs are becoming more and more popular, which demonstrate that there are additional requirements from users for supplementary services: They want more information to be shared in a call, and want the calling information presentation to be supported in both directions.
Customized Alerting Tone (CAT) and Customized Ringing Signal (CRS) were introduced to provide multimedia experience during the establishment of a call for the calling and the called party, but they have limitations as for CAT picture is not included in content type.
Hence, there is a need to improve and enhance the calling information presentation, so that the value of network can be maximized.
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1  ScopeWord‑p. 5

The present document will consider use cases and identify potential requirements for enhancing the calling information presentation. This will include:
  • Type of contents shared in calling information presentation, e.g. number, name, portrait, signature, etc.
  • Use cases for both calling party and called party.
  • Interaction with MMTel services, CAT, and CRS service.
  • Interoperability with other network.

2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 22.182: "Customized Alerting Tones (CAT) Requirements; Stage 1".
[3]
TS 22.183: "Customized Ringing Signal (CRS) Requirements; Stage 1".
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3  Definitions and abbreviations

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply.
A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Enhanced Call Information:
Additional information, such as, a text, audio, picture or video, provided by the calling or called party, or an authorised third party that is to be presented to the calling or called party.
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3.2  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply.
An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
ECI
Enhanced Call Information
CAT
Customized Alerting Tones
CRS
Customized Ringing Signal
MMTel
Multi Media Telephony

4  Use casesWord‑p. 6

4.1  Use Case 1 - Calling party use cases

4.1.1  Description

This use case proposes that the calling party shall be able to receive Enhanced Call Information (ECI) about the called party when initiating a call. The ECI can be number, name, logo, portrait, signature, introduction etc or a mixture of these. The media type can be single type of text, still image, graphic, speech, audio, video, or a mixture of these types above.
The ECI is sent to the calling party during the call setup. Depending on the amount of data being sent, the data transfer may continue during the call. The ECI is presented to the calling party before the called party answers if it is available to the UE of the calling party, but it can be presented also during the call. This service should not negatively affect the voice and video quality between the calling and the called parties.
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4.1.2  Pre-conditions

The user (calling/called party) shall be able to subscribe to the service, activate the service, update the settings.
The service user (calling/called party) can set different rules for each call.
The calling party may be able to block anything from the called party.

4.1.3  Service Flows

When the calling party calls the called party, the calling party experiences ECI about the called party (e.g. name, logo, portrait, video, etc.).
The calling party can reject ECI about called party based on called party identity, time, etc.

4.1.4  Potential requirements

The calling party shall be able to save the ECI set/sent by the called party.
The personal ECI (e.g. name, portrait, etc.), and the ECI of public services or enterprise (e.g. name, logo, etc.) to be displayed shall be pre-stored in the network.
The system shall be able to set limitations on file type, file size, etc. for storing the ECI.
The system shall be able to verify that the party is authorised to store and update the called party's ECI.
The system shall be able to provide different charging information (e.g. on event basis, volume basis, media type basis) for this service.
The calling party shall be able to reject the ECI based on rules e.g. time, the identity of the called party.
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4.2  Use Case 2 - Called party use cases

4.2.1  Description

This use case proposes that the called party shall be able to receivethe Enhanced Call Information (ECI) about the calling party when receiving a call. The information can be number, name, logo, portrait, signature, introduction etc or a mixture of these. The media type can be single type of text, still image, graphic, speech, audio, video, or a mixture of these types above.
The ECI is sent to the called party during the call setup. Depending on the amount of data being sent, the data transfer may continue during the call. The ECI is presented to the called party before the called party answers if it is available to the UE of the called party, but it can be presented also during the call. This service should not negatively affect the voice and video quality between the calling and the called parties. The calling party is allowed to select the specific information to be presented on the called party on a per call basis.
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4.2.2  Pre-conditionsWord‑p. 7

The user (calling/called party) shall be able to subscribe to the service, activate the service, update the settings.
The service user (calling/called party) can set different rules for each call.
The called party may be able to block anything from the calling party (e.g. the receiving party can block any audio information for all incoming communication presentation).
As service option, the Calling Party can enter the subject of the communication (per communication basis).

4.2.3  Service Flows

When the calling party calls the called party, called party experiences ECI about the calling party (e.g. name, logo, portrait, video, etc.).
The called party can reject ECI about calling party based on calling party identity, time, etc.

4.2.4  Potential requirements

The called party shall be able to save the ECI set/sent by the calling party.
The personal ECI (e.g. name, portrait, etc.), and the ECI of public services or enterprise (e.g. name, logo, etc.) to be displayed shall be pre-stored in the network.
As service option, if a specific text (object of the communication) is provided by the calling user, this information should replace any potential text information pre-stored in the network.
The system shall be able to verify that the party is authorised to store and update the calling party's ECI.
The network shall allow the calling party to select from the pre-stored ECI according to the called party on a per call basis.
The system shall be able to provide different charging information (e.g. on event basis, volume basis, media type basis) for this service.
The called party shall be able to reject the ECI based on rules e.g. time, the identity of the calling party.
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5  Relation with other services

From the above use cases it can be seen that ECIP provide similar functionality as CAT and CRS, except that it can provide additional information and support additional media types. Hence, ECIP can be considered as an enhancement to CAT and CRS, and will therefore have the same relationship with other services as CAT and CRS.

6  Conclusions

As ECIP provide similar functionality as CAT and CRS, the use cases and potential requirements described in the present document will be used as enhancements to CAT and CRS.
It is concluded that normative requirements be developed based on the potential requirements documented in clause 4 of the present document, and that these be added to TS 22.182 (CAT) and TS 22.183 (CRS) specifications.
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A  BibliographyWord‑p. 8

  • TS 22.081: "Line identification Supplementary Services; Stage 1".
  • TS 22.096: "Name identification Supplementary Services; Stage 1".
  • TS 24.173: " IMS Multimedia Telephony Communication Service and Supplementary Services; Stage 1".

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