The abstraction layer's common interface allows applications and upper layer protocols to be agnostic to the underlying network technologies. The purpose of this standard is to facilitate the integration of IEEE 1901 with other home network technologies. Additionally, the purpose of this standard is to define an abstraction layer that allows the following: -- Common network setup among heterogeneous network technologies -- Providing the same user experience in the process of adding a device to the network and the same user experience while setting an encryption key -- Intelligent network interface selection for delivery of packets that provides improved coverage performance, improved data rate on the poorest link, improved network capacity, improved network reliability and QoS, and support for end-to-end QoS for different traffic classes -- Seamless/transparent interface switching -- Real-time mapping of connection links and interfaces for each traffic class/stream -- Green energy managementThis amendment specifies additions to and appropriate modifications of IEEE Std 1905.1 to support a generic way to include additional MAC/PHYs (e.g: G.hn (Recommendations ITU-T G.9960, G.9961, G.9962, G.9963, G.9964), HPNA (Recommendation ITU-T G.9954), MoCA 2.0, Homeplug AV 2.0, HD-PLC 3 inside, IEEE Std. 1901.2, G.hnem (Recommendation ITU-T G.9902), Recommendation ITU-T G.9903, Recommendation ITU-T G.9904, IEEE P802.11ah, IEEE Std 802.15.4, Recommendation ITU-T G.9959, Bluetooth, HDMI, GSM). It will also address the co-existence between technologies operating on the same medium in the same frequency band that are supported by IEEE 1905.1 (e.g. IEEE 1901 ISP and Recommendation ITU-T G.9972). It also includes limited diagnostic layer 3 /4 information (e.g.: report IPv4 and IPv6 addresses associated with MAC address) to ease the transition into IPv6 in unmanaged environments. It defines diagnostic frames for connectivity checking on L2. It includes mechanisms to enable reasonably fast handoffs, fallbacks and define forwarding entity, loop prevention techniques and improved security, authentication and service discovery mechanisms. It also includes a mechanism to address multiple registrars using a selection mechanism. It will be developed by referencing and integrating work from other IEEE Standards. It also includes features to wake up an interface on a remote 1905 device. It also extends the "e;AP Auto configuration"e; feature to support multiple SSID per frequency band and synchronize ANQP parameters on multiple APs.
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