| 摘要 |
The present invention is concerned with establishing and maintaining a routing protocol based on a measured link metric p, in particular for a smart grid communication system. A link 1 between a first node such as a router A and a neighbouring second node B of a communication path from a source to a destination in a packet oriented communication network is selected wherein the two nodes are connected via a first communication link 1 and a second communication link 2. The link 1, 2 may have stochastic or time variable properties due to the lossy underlying communication technology. These stochastic and time variable properties are modelled as a Finite State Markov Channel FSMC with two states 5, 6. An updated link metric p(t+1) at a point in time t+1 of the first communication link is determined. The metric p is based on state transition probabilities lambda1 9 and lambda2 10 of the first and second state of the FSMC respectively. The first or the second communication link 1, 2 is selected for transmitting a further packet from node A to node B by comparing the updated link metric p(t+1) to a threshold pthr. |
