Here's a nifty trick for securing small pieces while you
rout them.
Layer biasing utilizes the principle that escape
routes on a horizontally biased layer will be horizontal and escapes on a vertically biased layer will be vertical--as shown in FIGURE 2.
To find a route, it uses cache technology to preserve the information of all nodes
routes [13].
However, they cannot be used as a proactive per-hop routing, where
routes are periodically and simultaneously calculated for all traffic flows in the network.
FRESH protocol was proposed in order to optimize the procedure of discovering optimal
routes from source to destination via omni-directional approaches.
Reactive protocols do not keep routing information updated, and they find
routes only when an origin node needs to transmit data packets to a destination node [12, 13].
In Reactive or On-Demand [1] Routing Protocols,
routes are not predefined and packet transmission for source node calls for route discovery to determine the route.
In order to keep
routes by means of very less overhead and converges quickly routing protocols should be adaptive, flexible and reactive.
The results show that the ETX metric which has been extensively used in mesh networks around the world is fundamentally flawed when estimating optimal
routes in real mesh networks.
The number of intermediate nodes depends on the routing protocol, which establishes efficient and connected end-to-end communication
routes between source and destination [6].
Thus, connections between direct and dual gates, which are placed in seperate domains, cannot be
routed symmetrically.
In our experience, a manually
routed board is more likely than an autorouted board to become a working prototype.