A QOS based data gathering framework for multi-hop surveillance system

Nowadays, multi-hop communication systems are often applied in power transmission system to transmit surveillance information to control center. In order to transmit surveillance data more efficiently, it is required to design the communication system with low latency and high reliability. This paper provides a novel data transmission framework along with a QoS provisioning multi-hop routing scheme for in smart grid. During normal data transmission period, all the nodes along the power line are divided into two groups. At one time slot, a group of nodes is considered as the sender and the other nodes are considered as the receiver. At the next time slot, we exchange the roles between these two groups of nodes. To avoid the wireless interference, we allocate the spectrum among these sensors and minimize the number of subchannel. When urgency occurred, node with the emergency information can select a relay node within its maximum transmission range according to the delay requirement. The simulation results are given to show the efficiency of our data gather framework.