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Scheduled Polling Mechanism

Scheduled Polling Mechanism. SeungKwon Lee(KT). History. M2M#20 Meeting (June 4 th ~ June 8 th ) Contribution : M2M(12)20_066 Scheduled Polling Mechanism Agreed in WG2 on June 7 th - Agreed in principal as an optional feature.

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Scheduled Polling Mechanism

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  1. Scheduled Polling Mechanism SeungKwon Lee(KT)

  2. History • M2M#20 Meeting (June 4th ~ June 8th) • Contribution : M2M(12)20_066 Scheduled Polling Mechanism • Agreed in WG2 on June 7th - Agreed in principal as an optional feature. - Also minor editorial modifications needed. work offline with Omar. • Contribution revised : M2M(12)20_066r1 - work with Omar Elloumi(Alcatel-Lucent) for editorial modifications • Plenary on June 8th - Further discussion required. • E-mail on June 13th from Erik (Ericsson) • the need for server initiated scheduling • See how to best integrate this into the REST architecture

  3. Discussion Issue • Sub-contribution #1 • propose needs for the scheduled polling as a client-2-server communication(asynchronous) - currently the short polling and long polling are specified in ETSI TS 102 690 v1.1.1. - The short polling mechanism is simple but causes the network traffic overhead - The long polling mechanism is better than the short polling but it needs to be repeated until a notification is received. Even though it is suitable for event-based reporting, it is inefficient in the case that the notification is delayed for a long time. It is also inefficient for periodic reporting which requires some waiting time. ☞ scheduled polling is efficient in the periodic reporting environment. My contribution can be splitted into 2 sub-contributions • Sub-contribution #2 • propose to add the scheduled polling to the notificationChannel management • - this is open issue in in ETSI TS 102 690

  4. Sub-contribution #1 • propose to add the scheduled polling as a client-2-server communication in clause 9.3.1.4 - change 1 : change Table 9.61 in 9.4.1.4 • Table 9.61

  5. Issuer Receiver method_request_A(…, corr) decide scheduled time method_response_A(…) scheduled time method_request_B(…, corr) method_response_B(…) Sub-contribution #1 • propose to add the scheduled polling as a client-2-server communication in clause 9.3.1.4 - change 2 : add the procedure for scheduled polling

  6. Sub-contribution #2 • propose to add the scheduled polling to the notificationChannel management - change 3 : add the new clause 9.3.2.26.7 for scheduled polling Issuer (D’A/DA/GA/NA/SCL) Hosting SCL (SCL) 001: Issuer requests to create the notificationChannel (CREATE) 002: decide schedule time and create resource 003: Response 004: select polling method 005: Issuer requests to retrieve the SCL resource on the scheduled time(RETRIEVE) 006: Response mIa/dIa/mId Figure 9.xxx Procedures for scheduled polling

  7. Sub-contribution #2 • propose to add the scheduled polling to the notificationChannel management - change 4 : change the attribute of notificationChannel resource in 9.2.3.35 • Table 9.59

  8. Opinion & discussion • My Opinion • sub-contribution #1 (change 1 ~ change 2) ☞ I propose that sub-contribution #1 be adopted in TS 102 690 because the scheduled polling was agreed in principal as an optional feature in the M2M#20 meeting, • sub-contribution #2 (change 3 ~ change 4) ☞ Further discussion required • Discussion and Q&A

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