Modeling and Analysis of Extended Access Barring Scheme for LTE Networks

• Main Authors: Dan-Wu Chen, 陳丹武
• Other Authors: Ray-Guang Cheng
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/31441841673020819234

碩士 === 國立臺灣科技大學 === 電子工程系 === 101 === Simultaneous channel accesses from mass machine-type communications (MTC) devices may congest the random-access channels (RACHs) of LTE networks. Currently, 3GPP selects extended access barring (EAB) as the baseline solution to relieve the congestion of RAHCs by barring low-priorities devices. Different settings of EAB parameters may re-shape the arrival process of MTC traffic and thus, lead to unpredictable performance. However, it is difficult to optimize the EAB parameters since only qualitative analysis of EAB and limited simulation results are available now. This paper presents an analytical model to investigate the performance of EAB algorithm on the RACHs in LTE networks. Computer simulations were conducted to verify the accuracy of the analysis. The optimal values of paging cycle and repetition period of SystemInformationBlockType14 (SIB14) can then be obtained from the analytical model subject to a target quality of service (QoS) constraint.