IEEE Consumer Electronics Magazine - January/February 2023 - 75

Figure 3. Semantic-based trustworthy routing of fog nodes.
trustworthiness of one entity may change over
time, the more recent interactions contribute
more to the trustworthiness of an entity. The fog
node also combines the trustworthiness from
other nodes because it may not have full knowledge
about the entity. After performing the trustworthiness
analysis, the fog node figures out
correlated emergencies using semantic information,
which is vital for determining the types and
quantity of emergency agents. In addition, when
the fog node cannot deal with all emergency traffic,
it utilizes semantic information to determine
the importance of emergencies and delays forwarding
the interest packets for the unimportant
emergencies, reducing the corresponding data
packet and improving the quality of service
(QoS) of more urgent information. The temporary
storage layer caches the analyzed information
about agents and emergencies. The security
layer, instead, comes into play for sensitive information.
Finally, the transport layer forwards the
packets to the corresponding receiver.
Fog-Enabled Emergency Information Extraction
and Agent Coordination
In this section, we first discuss the emergency
information extraction based on the
semantic features of ICN. Then we propose the
January/February 2023
agent coordination using the information
obtained in the fog node.
The emergency information includes semantic
information about the agents, emergency
events, and constraints for coordination, such
as traffic conditions. The fog node can utilize
image captioning and video storytelling to generate
textual summaries for emergency events,6
which is further analyzed to figure out the type
and urgency of emergencies. Then the fog node
gets the types of required agents and estimates
the time limit to handle the emergency. Similarly,
the fog node gets the types and positions
of emergency agents. These analyzed results will
be added to the content name. The fog node
classifies the information according to the content
name of the packet, which is named according
to the hierarchical naming structure of ICN7
and contains rich semantic information. For
instance, a sample content name is defined
as /shanghai/patient/injured/minhang/severe/
video/demo.mpg, which means that there is a
seriously injured person in Minhang. Then, the
fog node extracts the sensor data from edge
devices to analyze the traffic condition using
methods proposed in the paper by Thakur and
Malekian.13 For example, based on the GPS data,
the fog node estimates the speed of the agent
between two positions.
75

IEEE Consumer Electronics Magazine - January/February 2023

Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - January/February 2023

Contents
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