StreamCaster MIMO Radio User Manual
4/30/19
10017C000
Silvus Technologies Confidential
Page
135
an uplink to the Internet. The roaming feature allows mobile devices connected to StreamCaster radios to
roam from one site to another without any network re-configuration.
7.2.1
Implementation
Each site wishing to become part of the wireless mesh needs to connect one StreamCaster radio to its
LAN. Such a radio has to be configured to connect to a remote VPN server using the N2N protocol. Radios
from multiple sites will be connected at layer 2 via the N2N VPN server creating a single broadcast domain
for such nodes. By broadcasting routing packets in this domain, the nodes will auto-detect each other and
establish WAN links. Such links will appear on the StreamScape GUI with a link SNR of 120 dB to
differentiate from LAN links (150 dB) and wireless links.
The N2N VPN server will try to establish peer-to-peer links between the radios if it can. Under some cases
(e.g. symmetric NATs), this is not possible, in which case traffic between the peers is relayed by the N2N
server.
The N2N server can be hosted at any server with a public IP on the Internet. As a proof-of-concept, a
server has been set up on Amazon Web Services. Currently we support up to 10 Mbps unencrypted
between any two sites.
7.2.2
Use Case
Consider a military scenario where a platoon of soldiers begins its mission at an HQ, then breaks up into
two groups. Each group has at least one soldier with an uplink to the Internet (provided by a 4G card). The
HQ also has an uplink to the Internet. Every soldier and the HQ have a StreamCaster radio attached to
their devices.
The soldiers in the two groups want seamless and transparent communication between 1) other soldiers
in the same group 2) soldiers in the other group 3) back to HQ. Some lone soldiers (e.g. Soldier A with a
StreamCaster radio) may break up from each group and move about on their own. As they get close to
group 1, 2 or the HQ, they should be able to immediately establish communication and talk to all other
soldiers in the network.
The StreamCaster radios connected to the uplinks in Group 1-2 and the HQ will automatically connect and
form WAN links.
Note that the WAN and LAN backbone are complementary features. E.g. at the HQ, multiple radios can
be connected to a LAN backbone so that any approaching soldier or group has a direct line of sight wireless
connection to the HQ.
