Title :
Modeling and Analysis of an Extended Access Barring Algorithm for Machine-Type Communications in LTE-A Networks
Author :
Ray-Guang Cheng ; Jenhui Chen ; Dan-Wu Chen ; Chia-Hung Wei
Author_Institution :
Dept. of Electron. & Comput. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
Simultaneous channel accesses from mass machine-type communications (MTC) devices may congest the random-access channels (RACHs) of LTE-A networks. Currently, 3GPP selects extended access barring (EAB) mechanism as the baseline solution to relieve the congestion of RACHs by barring low-priority devices. Different settings of EAB parameters may re-shape the arrival process of MTC traffic and thus, lead to unpredictable performance. This paper presents an analytical model to investigate the performance of the EAB algorithm on the RACHs in LTE-A networks. Computer simulations were conducted to verify the accuracy of the analysis. The optimal values of paging cycle and repetition period of system information block type 14 (SIB14) can then be obtained from the analytical model subject to a target quality-of-service (QoS) constraint.
Keywords :
Long Term Evolution; quality of service; telecommunication traffic; 3GPP; EAB mechanism; LTE-A network; Long Term Evolution-Advanced network; MTC device; MTC traffic; QoS constraint; RACH; SIB14; extended access barring algorithm; machine-type communication; paging cycle; quality-of-service; random access channel; simultaneous channel access; system information block type 14; Algorithm design and analysis; Analytical models; Delays; Educational Activities Board; Turning; Wireless communication; Extended access barring; MTC; RACH congestion; random access;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2015.2398858
