doc IEEE 11 -13 1091 r 3 Nov

doc. : IEEE 11 -13/1091 r 3 Nov. 2013 Protocol Architecture of 802. 11 aq Date: 2013 -10 -30 Authors: Name Affiliations Address Phone email Dapeng Liu CMCC +86 13911788933 liudapeng@chinamobile. com Submission Beijing, China Slide 1 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Abstract This document discuss the solution architecture of 802. 11 aq. The first version of this document was presented in Sep. IEEE wireless interim meeting. Submission Slide 2 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Service Discovery Scenario • Scenario – STA can discover the service before association – Example: • User can use 802. 11 aq to find the WLAN network that provide printing service in hotel. • User can use 802. 11 aq to discover the WLAN network that provide Vo. IP service. • Assumption: – Service discovery is performed before association. Submission Slide 3 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Proposed Architecture for 802. 11 aq • Define a new Service Discovery Protocol • Reason: – As discussed in Sep. meeting, ANQP is point to point protocol that not suitable for service discovery. 802. 11 Scope STA New Service query protocol that defined by 802. 11 aq May Not in Scope of 802. 11 AP Service GAS Probe Extend ANQP or define new service query protocol Submission Up-layer service discovery protocol Slide 4 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 • Proposed Architecture – STA to AP: Pre-association service discovery layer 2 protocol • Define a new Service Discovery Protocol – AP to Service Server: • Up layer service discovery protocol • May not in 802. 11 scope – For service that provided by STA case is one exception. Submission Slide 5 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Extension for Service Discovery • Beacon – Extend beacon to indicate support of service discovery – Example: • In beacon message, define service discovery element. Element ID Octet Service Type 2 1 • Service Type: define the service type that the WLAN network can provide. • Example: – Printer/Vo. IP… Submission Slide 6 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Bit 0 | Bit 1| Bit 2 | Bit 3| Bit 4| Bit 5| ……………. . Bit 15 Service Type • Bit 0: Printer service is available if this bit set to 1. • Bit 1: Vo. IP service is available if this bit set to 1. • …. • This service type is used to indicate what kind of service is available in the network. • For example, if the AP’s beacon message indicates that the WLAN network support printing service. The STA OS’s connection manager can indicate the supporting of printing service. • The AP can learn and cache the supported service type from STA’s service query. (detail example in P 8) STA OS’s connection manager display the network provide printing service Submission Slide 7 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Extension for Service Discovery • Service discovery protocol – Define new Service discovery protocol over GAS • Similar with ANQP, query/response protocol • May support broadcast/multicast? • STA can use this protocol to query service before association. – Example: • STA ask: what is the IP address of the printer in this WLAN network? • AP translate this query to up-layer protocol and query the WLAN network. (for example, Bonjour) • The AP get response from the service provider (e. g. printer). • The AP send the query response to the STA, including the printer type and other parameters of the printer. • The AP can cache and set the service type field in the beacon message. Submission Slide 8 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Service discovery protocol Service Type Octet 1 Length 2 Service Information variable • Service Type: – The service type provided. • Length: – The length of the service information. • Service Information: – Service information. Printer types and other parameters. . Submission Slide 9 Dapeng Liu (CMCC)

Nov. 2013 doc. : IEEE 11 -13/1091 r 3 Q&A Submission Slide 10 Dapeng Liu (CMCC)