IEEE Std 802.11aq pdf free download

IEEE Std 802.11aq pdf free download.Information technology- Telecommunications and information exchange between systems Local and metropolitan area networks- Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 5: Preassociation Discovery.
4. General description
4.5 Overview of the services
4.5.4 Access control and data confidentiality services
Insert (he following subclause (4.5.4.10,) after 4.5.4.9:
4.5.4.10 MAC privacy enhancements
When a non-AP STA searches for, and connects to, an infrastructure BSS, IBSS, or PBSS or attempts to discover services on a network preassociation, it defines the addressing of its MAC layer for the particular connection. If the STA uses a fixed MAC address it is trivial to track the STA. An MSDU transmitted by a STA is assigned a sequence number that, if never reset, can also be used to track a device irrespective of the MAC address. If OFDM is used, the PHY DATA scrambler used can enable tracking of a device irrespective of the MAC address if it is not reseeded. The dynamic nature of BSS membership combined with this tracking information allows for construction of a network of connections, locations, and behavior. This network can be used to glean private and sensitive information regarding the individual behind the device.
Furthermore, even without establishing a connection, a mobile or portable STA that gratuitously transmits Probe Request frames containing SSIDs of favored infrastructure BSS networks, or announces the existence of IBSS networks, can reveal potentially sensitive information about its location and location history.
To mitigate this sort of traffic analysis a STA can support the ability to periodically and randomly change its MAC addresses and reset counters and seeds prior to association. While discovering networks, a STA can refrain from gratuitously transmitting Probe Request frames containing SSIDs of favored BSS networks.
4.5.9 Interworking with external networks
Insert the following subclause heading (4.5.9.1), and change the text (originating from the former 4.5.9) of the iiow 4.5.9.1 as shown:
4.5.9.1 General
The interworking service allows non-AP STAs to access services provided by an external network according to the subscription or other characteristics of that external network. An IEEE Std 802.11 non-AP STA might have a subscription relationship with an external network, e.g., with an SSPN.
An overview of the interworking functions addressed in this standard is provided below:
– Network discovery and selection
— Discovery of suitable networks through the advertisement of access network type, roaming consortium and venue information, via Management frames
Selection of a suitable IEEE 802.11 infrastructure using advertisement services (e.g., access network query protocol (ANQP) or an IEEE 802.2 jThI Information Server) in the BSS or in an external network reachable via the BSS.
Selection of an SSPN or external network with its corresponding IEEE 802.11 Infrastructure
= Preassociation discovery (PAD)
= Discovery of services offered by a BSS or an external network reachable via that BSS
The generic advertisement service (GAS), described in 4.5. 10, provides both support for a STA’s network discovery and selection, and support for a conduit for communication by a non-AP STA with other information resources in a network before joining the wireless LAN.IEEE Std 802.11aq pdf download.