Two-Stage Radio Access for Group-Based Machine Type Communication in LTE-A

論文翻譯標題: LTE-A中基於分群之MTC兩階段無線電存取
  • 高 宏瑋

學生論文: Master's Thesis


In Long Term Evolution-Advanced (LTE-A) network Machine type communication (MTC) provides random access-based communication for automation applications In MTC one of the most critical issues is the emergence of large number of MTC devices which may send requests to the base station at the same time such that severe collision occurs Whenever MTC devices have data to send the MTC devices perform random access procedure to obtain resource blocks When collision occurs the message delay accumulates and the data delivery fails In this case limiting the number of MTC devices' access to eNB at the same time can alleviate the collision In this thesis we propose a two-stage radio access scheme to alleviate collision and reduce message delay for MTC MTC devices are divided into several groups where random access in each group (as the first step) is controlled by a device called MTC gateway Collision of random access to the base station (as the second stage) is then effectively alleviated To observe the effect of numbers and sizes of groups we propose analytical model and simulation model to investigate the performance in terms of utilization of random access slots access success probability and average message delay Simulation results show that better performance is observed when the number of groups is around 64
獎項日期2014 8月 26
監督員Meng-Hsun Tsai (Supervisor)