Page 268 - ITU-T Focus Group IMT-2020 Deliverables

4 ITU-T Focus Group IMT-2020 Deliverables

As illustrated in Figure 10, a consumer may fetch the CCNx Content Objects from any replica and still be
assured that it is the correct data. This is because the Manifest tree is signed by the publisher and then
securely hash-linked to each data Content Object. The consumer and replica may also opportunistically
encrypt their session for privacy. The consumer may choose to only trust replicas, for example, that are
enumerated by the original content publisher or are provided by the a trusted party, such as the user’s carrier
or cloud service.
In a second example, a cell phone producing a video could be producer, publisher, and replica all in one.
Because one would not want a large number of consumers on the Internet fetching data directly from one’s
cell phone, it could be configured to only allow the user’s home media server to fetch content and then act
as the authoritative replica for the Internet. The user could choose to use a carrier service (i.e. cloud-based
media server) to act as the authoritative replica.

3.2 Overview of the five Proof Of Concept (PoC) performed for the ITU-T Focus Group on IMT-2020

POC #1: ICN Enhanced Mobile Video at the Network Edge (Cisco)
ICN provides a unified network and transport layer addressing content by name rather than by location. By
disrupting traditional connection-oriented communication model, ICN simplifies data delivery, mobility
management and secure transmission over a heterogeneous network access. In the demo, we select DASH
video delivery as use case and show the benefits of ICN mobility management, in-network control (rate/loss)
and network-assisted bitrate adaptation for a multi-homed user device.
PoC #2: Functional Chaining System in ICN (Fujitsu Labs of America)

Information-Centric Networking (ICN) is an emerging Internet architecture in which content is accessed by
its name rather than the IP address of the host that stores the content. By separating content from location,
ICN is expected to improve network efficiency and reduce the communication cost of accessing popular
content. ICN principles can be applied to functions as well as to content. Named functions can then be linked
to form service chains that provide optimized service delivery. This demonstration illustrates such a
functional chaining system to deliver real-time processed video content to a consumer.

PoC #3: End-to-end ICN Service Orchestration with Mobility for IMT 2020 (Huawei)
The PoC demonstrates one of the important benefits of ICN of offering seamless mobility as part of the
network architecture, avoiding any specific gateway functions or tunneling present in current 4G systems.
This demo takes advantage of name based routing, more specifically ID/Locator name space split that ICN
naturally supports to offer flexibility to the mobile entities to move between administrative domains and also
handling in-session mobility when they roam in a single domain.

PoC #4: IP Services over ICN (InterDigital)
The PoC highlights two quantitative benefits of our solution for delivering IP services over ICN. The first one
is that of introducing the capability to delivery HTTP responses via multicast to a number of clients. Our
solution specifically supports changing multicast groups by forming multicast groups in an ad-hoc manner
solely at the source network attachment point. The second aspect is that of the possibility to reduce service
latency through the exposure of surrogate service endpoints in a fast and flexible manner. This is enabled by
the exposure of HTTP-based resources through the FQDN of their providing servers. Examples for such
surrogate functionality is that of choosing alternative HTTP-level streaming servers, localizing video playout
to the regions where these playout point serve clients rather than needing to retrieve the content from a
central server.

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