farhad2010
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Dear All,
I need Simulation code of Weighted-Node Method in MatLab urgently.
It is urgent please.
Weighted-Node Method:
In wireless PMP network, the quantity of AP’s access nodes is one metric to evaluate AP’ load. But different with PMP networks, nodes in wireless Mesh networks could not only connect with Mesh BS directly, but also connect with Mesh BS relay by other Mesh SS. Then it could not reflect the veracious load situation simply by the quantity of access nodes. Taking the network topology in Figure 2 as an example, the number of the access node in Figure 2(a) and Figure 2(b) are both 3. If estimate the network load only by the quantity of nodes, we get the same load, which is much different with actual situation. Suppose each node having a service stream load of l transferred to Mesh BS, then the load of node 1, node 2 and node 3 in the Figure 2(a) are all l, and the load of Mesh BS is 3l. In the Figure 2(b), besides the service load of itself, node 1 relay the service load of node 2 and node 3, having a load of 3l finally. Similar with node 1, node 2 has a load of 2l including a service load of l of itself, and a service relay of node 3. The load of node 3 and Mesh BS are l and 3l separately. So we can get the load of a network as the sum of all nodes’ load in the network.
L(WMN) = Σ L(i) ; (sum lower value is iЄV) -------(1)
In which, Li is the load of node i, V is the set of all nodes in the network. Then the load sums of the network are 6l in Figure 2(a), and 9l in Figure 2(b), which are different in these two topology structures. Although these two networks have the same quantity of nodes, each node having the same service load itself, and both Mesh BS have a load of 3l, but different topologies lead to different load value. This shows that the quantity of networks nodes could not estimate the load of entire wireless Mesh networks accurately.
Figure 2. Wireless Mesh network load sketch map (Attach)
According the characteristics of wireless Mesh described, authors proposed a weighted-node method, in which the weight of each node is the number of hops to Mesh BS. Then the load value of wireless Mesh network could defined as
L(WMN) = Σ hop(i) ; (sum lower value is iЄV) -------(2)
In which, hop(i) is the hop number of node i to Mesh BS. Taking Figure 2 as an example also, based on the Formula (2), the load values of Figure 2(a) and Figure 2(b) are 3 and 6 separately, which could differ the network load situations of two topology structures.
Weighted-node method could replace node-quantity method scaling wireless Mesh networks’ load. Since all nodes in the wireless Mesh networks need to register to Mesh BS while accessing the network, Mesh BS get the information of both the quantity of Mesh SS in the network and hops’ number from each Mesh SS to Mesh BS, so the weighted-node method is easy to realize.
Thanks in advance
Farhad
I need Simulation code of Weighted-Node Method in MatLab urgently.
It is urgent please.
Weighted-Node Method:
In wireless PMP network, the quantity of AP’s access nodes is one metric to evaluate AP’ load. But different with PMP networks, nodes in wireless Mesh networks could not only connect with Mesh BS directly, but also connect with Mesh BS relay by other Mesh SS. Then it could not reflect the veracious load situation simply by the quantity of access nodes. Taking the network topology in Figure 2 as an example, the number of the access node in Figure 2(a) and Figure 2(b) are both 3. If estimate the network load only by the quantity of nodes, we get the same load, which is much different with actual situation. Suppose each node having a service stream load of l transferred to Mesh BS, then the load of node 1, node 2 and node 3 in the Figure 2(a) are all l, and the load of Mesh BS is 3l. In the Figure 2(b), besides the service load of itself, node 1 relay the service load of node 2 and node 3, having a load of 3l finally. Similar with node 1, node 2 has a load of 2l including a service load of l of itself, and a service relay of node 3. The load of node 3 and Mesh BS are l and 3l separately. So we can get the load of a network as the sum of all nodes’ load in the network.
L(WMN) = Σ L(i) ; (sum lower value is iЄV) -------(1)
In which, Li is the load of node i, V is the set of all nodes in the network. Then the load sums of the network are 6l in Figure 2(a), and 9l in Figure 2(b), which are different in these two topology structures. Although these two networks have the same quantity of nodes, each node having the same service load itself, and both Mesh BS have a load of 3l, but different topologies lead to different load value. This shows that the quantity of networks nodes could not estimate the load of entire wireless Mesh networks accurately.
Figure 2. Wireless Mesh network load sketch map (Attach)
According the characteristics of wireless Mesh described, authors proposed a weighted-node method, in which the weight of each node is the number of hops to Mesh BS. Then the load value of wireless Mesh network could defined as
L(WMN) = Σ hop(i) ; (sum lower value is iЄV) -------(2)
In which, hop(i) is the hop number of node i to Mesh BS. Taking Figure 2 as an example also, based on the Formula (2), the load values of Figure 2(a) and Figure 2(b) are 3 and 6 separately, which could differ the network load situations of two topology structures.
Weighted-node method could replace node-quantity method scaling wireless Mesh networks’ load. Since all nodes in the wireless Mesh networks need to register to Mesh BS while accessing the network, Mesh BS get the information of both the quantity of Mesh SS in the network and hops’ number from each Mesh SS to Mesh BS, so the weighted-node method is easy to realize.
Thanks in advance
Farhad
