Enhanced access control in LTE advanced systems

摘要

An enhanced access control method is proposed for machine-type communications (MTC) in a 3GPP LTE-Advanced network. An MTC device is configured for enhanced access barring (EAB). When the MTC device attempts access to the network, the NAS layer checks whether EAB is applicable for the MTC device. If yes, then the NAS layer forwards EAB configuration to the AS layer for further EAB control. Based on the EAB configuration, a base station broadcasts EAB information to UEs via system information block. The EAB information indicates whether barring is applied to a number of EAB categories and a number of access classes. Based on the EAB information, the MTC devices performs EAB for access attempt to RRC. If access is not barred under EAB, then the MTC device further performs ACB for access attempt to RRC.

主权项

1. A method comprising:
detecting a device enhanced access barring (EAB) configuration by a user equipment (UE) in a mobile communication network, wherein the UE EAB configuration indicates whether the UE is configured with EAB such that the UE is subject to restriction of any EAB category; acquiring EAB information from a base station by the UE if the UE is configured with EAB, wherein the EAB information indicates whether barring is applied to a number of EAB categories and a number of access classes broadcasted via a system information block; performing enhanced access barring by the UE for radio resource control (RRC) connection based on the EAB information; and performing access class barring (ACB) for RRC connection if the UE is configured for ACB and is not barred by the enhanced access barring.