IEEE Consumer Electronics Magazine - July 2018 - 63

number of requests for services increases. Compared to the
core data center infrastructure, however, there was less delay in
the proposed model, and it performed linearly; thus, it exhibited the effectiveness and ability of our proposed model to handle a large number of IoT devices in a smart city.
We also evaluated the response time (i.e., the time taken
from the generation of a request to the time when the first
response is received) and throughput of the DistArch-SCNet
model. The response time of each request awaiting various
services from the data center is illustrated in Figure 6(a). The
DistArch-SCNet model with and without the ECHA
algorithm offers shorter response time compared to the core
model when the number of requests increases. Figure 6(b)
illustrates the throughput variation with respect to the number
of requests in the DistArch-SCNet model and core infrastruc-

The output result in this figure
demonstrates that the DistArchSCNet model provides higher
throughput compared to the core
infrastructure with respect to the
number of requests in the network.
ture. The output result in this figure demonstrates that the
DistArch-SCNet model provides higher throughput compared
to the core infrastructure with respect to the number of requests in the network.

150

60

Delay Incurred (ms)

Delay Incurred (ms)

50
100

50

40
30
20
10

0

0

500

1,000 1,500 2,000
Number of Devices

2,500

0

3,000

0

500

1,000 1,500 2,000
Number of Requests

2,500

3,000

(b)

(a)
DistArch-SCNet

DistArch-SCNet with ECHA

Core

figurE 5. The delay incurred with (a) an increase in the number of devices and (b) an increase in the number of requests.

50

3,500
3,000

40
Throughput (Mb/s)

Response Time (ms)

45
35
30
25
20
15
10
5
0

2,500
2,000
1,500
1,000
500

0

500

1,000 1,500 2,000
Number of Requests
(a)

2,500

DistArch-SCNet

3,000

0

0

500

1,000 1,500 2,000
Number of Requests
(b)

DistArch-SCNet with ECHA

2,500

3,000

Core

figurE 6. The delay incurred with a (a) variation in response time and (b) variation in throughput.

july 2018

^

IEEE Consumer Electronics Magazine

63



Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - July 2018

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