doc IEEE 802 11 -17 1565 r 1

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 P 802. 11 aq Pre-Association Service Discovery Summary Date: 2017 -11 -07 Authors: Agenda Slide 1 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 Purpose • The P 802. 11 aq amendment enables delivery of preassociation Service Discovery information by IEEE 802. 11 stations (STAs). • Pre-association protocol designed to discover services on a WLAN • Printer discovery in a hotel Agenda Slide 2 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 Technical Highlights • • Container MAC protocol to carry upper layer service discovery protocols (e. g. UPn. P, m. DNS) Provisioning and configuration of services in the access point – • Universal identification of services – – • Agenda 3 Service Transaction Proxy is a logical element connected to the access point Using a hash name Provide service attributes (e. g. 3 D printer capability or point of sale service) Currently considering request/response or broadcast concept

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 So why does P 802. 11 aq help? • Discover services without having to connect to the network: – – Agenda Information about services that can be accessed/reached IF STA 1 subsequently chooses to connect to STA 2. This is the first pre-association mechanism to use STA specific information in a request (uplink). Slide 4 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 Device Configuration • • Majority of 802. 11 STAs are configured with a saved network (including local administration policy) ‘out of band’. Most devices have multiple saved networks. 802. 11 Provisioning for Public networks: – • 802. 11 Provisioning for Enterprise networks: – • • Captive Portal or Passpoint Provisioning SSID, Out of Band (e. g. USB connection to a PC), or mobile device management (MDM) This enables the wireless device to successfully connect and interoperate on a LAN. Note: This amendment would allow a device to determine information about the local administration used by an AP pre-association. Agenda Slide 5 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 Pre-association Privacy • • Fixed MAC addresses can be tracked Some countries have a legal requirement to provide privacy of device addresses • • “It's a real issue because stores can buy Wi-Fi equipment that logs smartphones' MAC addresses, so that shoppers are recognized by their handheld when they next walk in, or walk into affiliate shop with the same creepy system present. This could be used to alert assistants, or to follow people from department to department, store to store, and then sell that data to marketers and ad companies. Public wireless hotspots can do the same. Transport for London in the UK, for instance, used these techniques to study Tube passengers. Regularly changing a device's MAC address is supposed to defeat this tracking. ” • [The Register] • Agenda Slide 6 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 IEEE 802. 11 aq and IEEE 802 c-2017 • • MAC address shall conform to IEEE 802 -2014 and IEEE 802 c-2017 Pre-association: – – MAC address follows IEEE 802 -2014 format MAC behaviour when MAC address privacy is enabled: • • • Agenda Shall select a random MAC address in the local address space in accordance with IEEE 802 c-2017 When the STA selects a network to associate it checks dot 11 Locally. Administered. MACConfig to config its MAC address according to the network its associating with. dot 11 Locally. Administered. MACConfig is configured for a saved network on the device by the local administrator of the network Slide 7 Stephen Mc. Cann, Black. Berry

doc. : IEEE 802. 11 -17/1565 r 1 November 2017 Progress • P 802. 11 aq • P 802 c Agenda Slide 8 Stephen Mc. Cann, Black. Berry