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WT
DATA
node1
W T
DATA
node2
WT
DATA
node3
(m-3)WT
DATA
node m
PT
DATA
node n
t
(a) Timing of ACRA
DATA
DATA
node1
i n
DATA
DATA
node2
i n
i n
i n
DATA
DATA
node3
i n
DATA
DATA
node4
DATA
DATA
node5
t
(b) Timing of CSP
Fig. 7. Timing of algorithm
4 Simulation Results and Analysis
4.1 Simulation Environment and Parameter
According to the distribution environment of actual low voltage distribution
network, we set 21 terminal nodes and 1 BS node in the range of 50 meters in
radius and use PC as simulation platform and Opnet14.5 to compilation and
simulation environment. We assume that all nodes form three artificial cobwebs
and they stay the same in simulation time. Fig.8 shows the topology structure
after networking, subnet 0 represents BS node, subnet 1 0, subnet 2 0 and sub-
net 3 0 are their central node of each subnet respectively, the other nodes are
terminal nodes. Based on the Konnex standard [15], we set the channel trans-
mission rate 2.4Kbps and packet size 24bits. The transmission time of the packet
t x is calculated in formula (2)
t tx = p/Baud
(2)
p is the packet size, is the communication rate.
4.2 Simulation Results and Analysis
According to the generating rate of each node is 24bits/s, the calculated through-
put of link subnet 3 0-subnet 2 0 is 168 bits/s. The throughput of link sub-
net 2 0-subnet 1 0 includes the data of subnet3 and subnet 2, it is 336 bits/s.
The throughput of link subnet 1 0-subnet 0 includes the data of all the 21 nodes,
it is 504bits/s. The throughput simulation results of link subnet 3 0-subnet 2 0,
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