The first scenario is a cellular system which has a center node, and all other nodes besides the center node only communicate with the center one.
After broadcasting, n k will become a center node.
From the perspective of VC, a center node is a representative node.
As for graphs on frequencies "18", "19", "21", "22", "24", and "26", nodes inside them are wheel-shaped with a centered node, all other nodes are around the centered one.
The throughput of ALOHA ( S out q ) and coded ALOHA ( S nc q ) as a function of the center node transmission probability (p c ).
Then, each node sends cross-layer information, including traffic arrival rate, neighbor node density, and packet priority to the center node, as a basis to decide time slot allocation.
With regards to the network we tested on, a 5-node network was used in these tests with 2 as data center nodes and the rest as client nodes (private clouds).
There are three types of flows: an input flow to the center node, an output flow from the center node, with and without network coding, denoted as S in f, S nc f and S out f, respectivelyb.
When network coding is not possible, with 1−q(m), the center node transmits a header packet as a native packet.
With these probabilities, λ0, λ and μ, the queue of the center node is modeled as a birth-death process in Figure 2. By solving this Markov chain, we can obtain the steady state probability Π m. Figure 2 State diagram of the center node for ALOHA.
