For the purposes of the present document, the terms and definitions given in
TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in
TR 21.905.
P2P:
Tracker:
A directory server which maintains a list of peers storing segments for a specific content, and answers queries from peers for peer lists.
User Peer:
Network Peer:
Content Source Server:
Content Cache Server:
Content Delivery Network:
Is the network for content distribution services.
DRM Server:
The entity which manages the digital rights of digital contents to be shared within the Content Delivery Network.
Origin Server:
Stores the original content resources.
Edge Server:
Is the content server located on the edge of a CDN for content delivery.
CDN Controller:
Is responsible for allocating of content resources from the Origin Server to the Edge Servers as well as for allocating of a neighbouring Edge Server to the CDN.
Bitmap:
Describes which parts of the content are stored in a User Peer or Network Peer.
Swarm:
A swarm refers to a group of clients (i.e., Peers) who exchange data to distribute the same content (e.g. video/audio program, digital file, etc) at a given time.
Cost Map:
Defines Path Costs amongst sets of source and destination Network Locations. Path Costs are generic costs and can be internally computed by a network provider according to its own needs.
Network Map:
Is the resulting set of endpoints which are grouped together according to the Network Location endpoint property to indicate their proximity.
For the purposes of the present document, the abbreviations given in
TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905.
IMS P2P CDS
IMS based P2P Content Distribution Services
CDN
Content Delivery Network
CSS
Content Source Server
CCS
Content Cache Server
DRM
Digital Right Management