An Optimized Scheme of Random Access Procedure for Power Wireless Private Network

long term evolution (LTE) has been widely using in power wireless private network. As safety and reliability are the basic requirements of power wireless private network, systems should reoperate and key user equipment should be re-connected as soon as possible after some unexpected situations, for example power down and power on for an evolved Node B. Therefore, an optimized scheme of random access (RA) procedure for TD-LTE power wireless private network was presented in this paper. Referring to specific priorities about different power services, distributions of preambles during random access process were optimized when power wireless private network suffering unexpected situations. Combining with realistic power services, a reserve plan was capable be achieved by using this scheme. With this scheme, high priority services could be re-connected to the system in time, and other services could also be re-connected as much as possible, the reliability of power wireless private network was improved.