The VCA is a Peer to Peer (P2P) video distribution system
that allows content exchange and transfer between approved Voyager
families. Individual families can be members of separate
and diverse community groups, and content will not cross community borders.
Some of the key features of the VCA include:
The Voyager Collaborative Architecture
(VCA) is an extension to the VIA when it is necessary to expand beyond
a local site for connectivity, bandwidth or economic reasons. It offers
scalability by interconnecting Voyager
systems across WAN's, enabling multiple geographically distributed Voyager
systems to share their meta-data and video content.
The rational behind the Voyager
Collaborative Architecture is to overcome the cost and availability constraints
that impact the delivery of broadcast quality video over IP networks.
The solution is to maintain one or more storage repositories with all
the video content. Local video delivery is accomplished from distributed
regional servers (also referred to as "cache" servers) located
close to end users, which provides users with a view of all content available
locally and at the central content repositories. End user requested content
is extracted and temporarily cached at remote sites to satisfy local demand.
Community is a collection of families that want to collaborate by sharing
meta-data and content;
Each Family can
define its Family name and become aware of all Families in its Community.
Content Distribution & Scheduling
exchange content both collaborating Families must identify each other
as members of their Community;
Families can search
other community members' meta-data to request specific videos;
Systems will then
move a copy of the content from other Community members to their own cache
for delivery to their local subscribers;
Content will be
transferred at faster than real time streaming data rates (assuming adequate
bandwidth) and will provide the end user with a high Quality of Service
A user searching
for content will be informed of local content and will be made aware of
other Families in the Community which can be accessed for additional content;
Along with the
meta-data will come the video rights and business permissions.