IEEE ACSE_SA_rev03.ppt SLIDE 1 IEEE Application Profile – Association Control Function Paul Spadafora,

IEEE ACSE_SA_rev03.ppt SLIDE 2 Scope Define compatible set of association control messages for both & Allow all data to be communicated using MDER (Simpler than BER) Support multiple protocol / application services (e.g., POC, PHD, PCD,...) Support “Fast reconnect”

IEEE ACSE_SA_rev03.ppt SLIDE 3 Status A draft proposal has been created start with the approach to messaging Moved away from ACSE Standard – including removal of the Presentation and Session Layer Added new data fields to the structures to capture needed data

IEEE ACSE_SA_rev03.ppt SLIDE 4 Open Issues allows for MDAP-XT (expedited) and coalesced messages at the session Layer. These do not exist in Do we need to support these?

IEEE ACSE_SA_rev03.ppt SLIDE 5 Open Issues Can we support “fast to operating” feature? Reduces the amount of time and data transferred from association to operating state. Needs to be studied is based on the Manager initiating association Does the existing state machine and messages after association support this? How about “fast to in-sync”?

IEEE ACSE_SA_rev03.ppt SLIDE – Start-up System Interaction “fast to operating” would eliminate this

IEEE ACSE_SA_rev03.ppt SLIDE 7 “fast to in-sync” Two substates of operating: -“in-sync” -“out-of-sync”

IEEE ACSE_SA_rev03.ppt SLIDE 8 Open Issues Should we harmonize the manager/agent association initiation? Currently Manager in initiates the association. Agent in initiates the association PHD are generally low powered devices Makes sense to reduce the burden of discovery / association. Doesn’t necessarily apply for POC devices If we change there will be legacy issues

IEEE ACSE_SA_rev03.ppt SLIDE 9 Future considerations Harmonized association moves away from standardized association towards a custom solution for medical devices Session and Presentation Layer is null Presentation Layer is hardcoded to MDAP Does this constrain us too much in the future? If need be, could put presentation context at application layer

IEEE ACSE_SA_rev03.ppt SLIDE 10 Next Steps Participant review of draft proposal Identify any issues and address them Discuss on periodic web-ex Investigate and propose a solution for: “fast to operating” Manager vs Agent association initiation Finalize proposal and vote