“…= f(3, 1),(7,1),(11,1),(15,1),(3,5),(15,5),(3,9),(15,9),(3,13),(7,13),(11,13),(15,13)g.To restrict the EDM forwarding to the structuring neighborhood, each node holds a variable Num H. Num H records the maximum number of EDM forwardings within the structuring neighborhood, and it is determined by the size of the structuring element and the node communication radius. If the size of the structuring element is s 3 s and the communication radius is r, then an EDM will be forwarded (s À 1)a=( ffiffi ffi 2 p r) AE Ç times to ensure that all of the structuring neighbors receive it.…”