1. P802.11aq Broadcast Features
June 2018
doc.: IEEE /1091r0
June 2018
P802.11aq Broadcast Features
Date:
Authors:
Stephen McCann, BlackBerry
Stephen McCann, BlackBerry

2. June 2018
doc.: IEEE /1091r0
June 2018
Summary
The P802.11aq amendment enables broadcast delivery of pre-association Service Discovery information to IEEE stations (STAs)
Basic information in Beacons (Probe Responses)
Updated group addressed version of Generic Advertisement Protocol (GAS)
Stephen McCann, BlackBerry
Stephen McCann, Blackberry

3. June 2018
doc.: IEEE /1091r0
June 2018
Technical Highlights
Container MAC protocol to carry queries based on upper layer service discovery protocols (e.g. UPnP, mDNS)
Provisioning and configuration of services in the access point
Service Transaction Proxy is a logical element connected to the access point
Universal identification of services
Using a hash name
Provide service attributes (e.g. 3D printer capability or point of sale service)
Stephen McCann, Blackberry

4. Service Hash A service hash is created from a service name (RFC 6335).
June 2018
doc.: IEEE /1091r0
June 2018
Service Hash
A service hash is created from a service name (RFC 6335).
service hash = L(SHA-256(service name), 0, 48).
6 octets in length
Service Hashes can be broadcast in a “Service Hash Element” in a beacon/probe response.
Service Hashes can be mathematically combined into a bloom filter and broadcast in a “Service Hint Element”. The bloom filter enables the receiving STA to determine the probability that the transmitting STA has any specific service.
Stephen McCann, BlackBerry
Stephen McCann, BlackBerry

5. Group Addressed GAS June 2018 June 2018 doc.: IEEE 802.11-18/1091r0
Stephen McCann, BlackBerry
Stephen McCann, BlackBerry

6. Group Addressed GAS A STA can advertise its GA GAS capability
June 2018
doc.: IEEE /1091r0
June 2018
Group Addressed GAS
A STA can advertise its GA GAS capability
Time-outs prevent broadcast repeats
A STA can elect to switch between GA and non-GAS mode.
Stephen McCann, BlackBerry
Stephen McCann, BlackBerry