Nodes that support the various features described above can be formed into a mesh network. An illustration of a mesh network is shown in Figure 2.8 below
Node supports the above features may form a mesh network. A schematic view of the mesh network as shown in Figure 2.8
Figure 2.8 shows three Relay nodes: Q, R, and S. The three nodes that support the Friend feature are N,O, and P, however N does not have any friendships; therefore only O and P are Friend nodes. There are five Low Power nodes: I, J, K, L, and M. Nodes I, J, and K have P as their friend, while L and M have O as their friend. Node T is only connected to the mesh network using a GATT bearer; therefore S must relay all messages to and from T
Figure 2.8 shows three relay nodes: Q, R, and s. Three nodes support a friend function is N, O and P, and N does not have any friends relationship; therefore, only the nodes O and P are friends. 5 low-order node has: I, J, K, L and M. Node I, J and K to P as a friend, and L and M to O friend. GATT node T using only the carrier is connected to the MESH network; therefore, S must forward all messages to T, and forwards the message received from the T.
For example, if a message is to be sent from T to L, then T will send the message to node S using the GATT bearer. Node S will retransmit this message using the advertising bearer. Nodes H, R, N, and O are within radio range of node S; therefore they will receive this message. Node O, being the friend of node L will store the message, and if the message was a segmented message, node O will respond with an acknowledgment at the lower transport layer. Sometime later, L will poll node O to check for new messages, such that O will forward the message originally sent by T to L.
For example, if a message is sent from T to L, then T will be used to send messages to node S. carrier GATT The node S retransmits the carrier using a broadcast message. Node H, R, N, O S within radio range of the node; therefore, they will receive the message. L O node as a friend node store the message, if the message is a segmented message, the node O to confirm the response in the underlying transport layer. Later, L polls to check for new messages node O, O to forward the message originally sent to T L.