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Green Communications and Networking
book

Green Communications and Networking

by F. Richard Yu, Xi Zhang, Victor C.M. Leung
April 2016
Intermediate to advanced content levelIntermediate to advanced
399 pages
11h 49m
English
CRC Press
Content preview from Green Communications and Networking
Energy Aware VI Planning 221
t. The following demand constraints should be satisfied in the VI [27]:
s
p
a
dsi
t
m
di
tt
M
di
x
dpti
=
tT
h
dti
,d=1, 2,...,D,
i =1, 2,...,I, t =1, 2,...,T
(8.6)
Summing up the lightpaths through each link e (e =1, 2,...,E)ofthe
VI we can determine the required link capacity y
et
for link e required at time
t [28], [29]:
d
i
s
p
δ
edpti
x
dpti
y
et
,e=1, 2,...,E, t=1, 2,...T (8.7)
where δ
edpti
is a binary variable defined as follows [28], [29]:
δ
edpti
=
1, if link e of VI belongs to path p realizing
demand d of service class i at time t at server s
0, otherwise
(8.8)
Using the same rationale, the capacity of each link e at time t in the VI
is allocated by identifying the required lightpaths in the PI. The resulting PI
lightpath z determine ...
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Publisher Resources

ISBN: 9781439899144