1. doc.: IEEE 802.11-15/182r0 Submission January 2015 RYU Cheol, ETRISlide 1 Service Hash Mapping Date: 2015-1-15 Authors:

2. doc.: IEEE 802.11-15/182r0 Submission January 2015 RYU Cheol, ETRISlide 2 Abstract This presentation is on how to construct Service Hashes from various sources such as service types, service parameters, and service location. I would like to discuss various mapping could be possible and even cannot be possible. It is dependent on upper layer service discovery protocols.

3. doc.: IEEE 802.11-15/182r0 Submission DNS-SD All those below can be sources of hashing. –Service Type only _ipp._tcp.local. (IANA assigned name or bonjour service type) _skype._tcp.local (proprietary name) –Service Type with domain New\ Employee\ Page._http._tcp.dns-sd-services http._tcp._wikipedia.org –Service Type with some parameters _ipp._tcp.local color-supported=yes Service Name is not the only source of hashing. January 2015 RYU Cheol, ETRISlide 3

4. doc.: IEEE 802.11-15/182r0 Submission Automatic proxying –_ipp._tcp.local –_ipp._tcp.local color-supported=yes Manual proxying (or service registration) –New\ Employee\ Page._http._tcp.dns-sd-services –Flight\ Information._http._tcp.local –skype._tcp.local –http._tcp._wikipedia.org Proxyings January 2015 RYU Cheol, ETRISlide 4

5. doc.: IEEE 802.11-15/182r0 Submission A mom shouted in a multicast packet. –“Come on! Breakfast is ready.” A kid asked and a mommy answered. –“Mommy breakfast is ready?” –“Yes in 5 minutes.” How can you map the service to hash value? It is dependent on ULP. But at the worst case, we can just proxy mom’s announcements. Mom service discovery protocol January 2015 RYU Cheol, ETRISlide 5

6. doc.: IEEE 802.11-15/182r0 Submission IETF RFC 2782 (DNS SVR): A DNS RR for specifying the location of services DNS SRV Service Types IANA Service Name and Transport Protocol Port Number RegistryIANA Service Name and Transport Protocol Port Number Registry References January 2015 RYU Cheol, ETRISlide 6