The basic service set is defined by a basic service set identifier ( BSSID) shared by all devices within it. radio frequency, modulation scheme, security settings) such that they are wirelessly networked. (For example, all of the devices that together form and use a Wi‑Fi network called Foo are a service set.) A service set forms a logical network of nodes operating with shared link-layer networking parameters they form one logical network segment.Ī service set is either a basic service set ( BSS) or an extended service set ( ESS).Ī basic service set is a subgroup, within a service set, of devices that share physical-layer medium access characteristics (e.g. In IEEE 802.11 wireless local area networking standards (including Wi-Fi), a service set is a group of wireless network devices which share a service set identifier ( SSID)-typically the natural language label that users see as a network name.

Note that in the diagram the incorrect label ESSID (Extended Service Set Identifier) refers to the service set identifier.

Notebook_My is able to automatically roam between the two BSSs, without the user having to explicitly connect to the second network. The key idea behind this model is that a Mobile Node (MN) solicits for a router advertisement (RA) in parallel to its neighbor routers before leaving the previous point of attachment.An example of a service set called 'WiFi Wikipedia' consisting of two basic service sets ( BSSs). In order to reduce this handoff latency, a Parallel DAD (PDAD) model is proposed for reducing packet loss. Duplicate Address Detection (DAD) is performed during address auto-configuration which takes around 70% of the time for the total handoff procedures.

MIPv6 handoff latency includes link layer establishment delay, movement delay, address auto-configuration delay and binding update/registration delay. This causes packet loss and degrades the Quality of Service (QoS) for real-time applications. However, MIPv6 is not widely deployed due to handoff latency and other limitations. In order to realize this, Internet Engineering Task Force (IETF) is taking advantage of Mobile Internet Protocol version 6 (MIPv6) because it has more suitable features than MIPv4. Next Generation Networks (NGN) are envisioned to be fully Internet Protocol (IP) based so that users can experience high quality and ubiquitous communication.

Ad hoc network mac address