56 Software Networks
the number of tokens, and is therefore not as powerful as a non-shared
access point. However, in light of the rise in Wi-Fi power, as we shall
see in Chapter 6 on 5G, each virtual access point can have sufficient
capacity. In particular, the use of the IEEE 802.11ac standard means
that each virtual access point is able to achieve sufficient data rates for
all conventional applications, and even some less-than-conventional
ones.
Undeniably, there are some flaws with virtual Wi-Fi access points!
Each virtual Wi-Fi access point has its own signaling frames. If the
number of virtual Wi-Fi access points is high, then the overhead
expenditure is great.
The access point described here is a virtual Wi-Fi access point, but
it can perfectly well be a virtual Node-B, i.e. the device which
manages the physical antenna for a mobile network. In this case, the
box may be considered as an HNB (Home Node-B) or an MNB
(Metro Node-B), extended with significant capacities to receive
virtual computation machines.
More generally, all wireless access techniques can be virtualized,
and thus facilitate personal connections. Depending on the hardware
that can be replaced by software, major advances can be implemented
to work toward multi-technology access solutions.
In Figure 3.6, we show the context of virtual access points, which
is one of the fundaments of the “smart edge” environment. Indeed, for
users to connect, we need to put antennas in place, and we can exploit
those antennas to do all the local computation needed for access
control. In this context, a large portion of the network’s intelligence is
on the periphery. The difficulty is in handling communications
between users situated in different sub-networks, because we need to
coordinate the networking elements which are used for the end-to-end
communications. Communications through the eastbound and
westbound interfaces are crucial for SDN solutions, to interconnect
the femto-datacenters.
www.it-ebooks.info
the number of tokens, and is therefore not as powerful as a non-shared
access point. However, in light of the rise in Wi-Fi power, as we shall
see in Chapter 6 on 5G, each virtual access point can have sufficient
capacity. In particular, the use of the IEEE 802.11ac standard means
that each virtual access point is able to achieve sufficient data rates for
all conventional applications, and even some less-than-conventional
ones.
Undeniably, there are some flaws with virtual Wi-Fi access points!
Each virtual Wi-Fi access point has its own signaling frames. If the
number of virtual Wi-Fi access points is high, then the overhead
expenditure is great.
The access point described here is a virtual Wi-Fi access point, but
it can perfectly well be a virtual Node-B, i.e. the device which
manages the physical antenna for a mobile network. In this case, the
box may be considered as an HNB (Home Node-B) or an MNB
(Metro Node-B), extended with significant capacities to receive
virtual computation machines.
More generally, all wireless access techniques can be virtualized,
and thus facilitate personal connections. Depending on the hardware
that can be replaced by software, major advances can be implemented
to work toward multi-technology access solutions.
In Figure 3.6, we show the context of virtual access points, which
is one of the fundaments of the “smart edge” environment. Indeed, for
users to connect, we need to put antennas in place, and we can exploit
those antennas to do all the local computation needed for access
control. In this context, a large portion of the network’s intelligence is
on the periphery. The difficulty is in handling communications
between users situated in different sub-networks, because we need to
coordinate the networking elements which are used for the end-to-end
communications. Communications through the eastbound and
westbound interfaces are crucial for SDN solutions, to interconnect
the femto-datacenters.
www.it-ebooks.info