Enhanced access control in LTE advanced systems
First Claim
1. A method comprising:
- detecting a device enhanced access barring (EAB) configuration by a Machine-Type Communications (MTC) device in a mobile communication network, wherein the device EAB configuration indicates whether the MTC is configured with EAB such that the MTC is subject to restriction of any EAB category;
acquiring enhanced access barring (EAB) information from a base station by the MTC if the MTC 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 MTC device for radio resource control (RRC) connection based on the EAB information; and
performing access class barring (ACB) for RRC connection if the MTC device is configured for ACB and is not barred by the enhanced access barring.
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Accused Products
Abstract
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.
28 Citations
17 Claims
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1. A method comprising:
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detecting a device enhanced access barring (EAB) configuration by a Machine-Type Communications (MTC) device in a mobile communication network, wherein the device EAB configuration indicates whether the MTC is configured with EAB such that the MTC is subject to restriction of any EAB category; acquiring enhanced access barring (EAB) information from a base station by the MTC if the MTC 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 MTC device for radio resource control (RRC) connection based on the EAB information; and performing access class barring (ACB) for RRC connection if the MTC device is configured for ACB and is not barred by the enhanced access barring. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11)
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4. A method comprising:
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detecting a device enhanced access barring (EAB) configuration by a Machine-Type Communications (MTC) device in a mobile communication network, wherein the device EAB configuration indicates whether the MTC is subject to EAB; acquiring enhanced access barring (EAB) information from a base station by the MTC if the MTC is subject to 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 (SIB), and wherein the MTC device checks schedule information in SIB1 to decide if the EAB information in SIB14 is available; performing enhanced access barring by the MTC device for radio resource control (RRC) connection based on the EAB information; and performing access class barring (ACB) for RRC connection if the MTC device is configured for ACB and is not barred by the enhanced access barring. - View Dependent Claims (5)
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12. A method, comprising:
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receiving an enhanced access barring (EAB) configuration from a mobility management entity by a base station in a mobile communication network, wherein the EAB configuration indicates a percentage of traffic to be barred and an EAB category to be barred; determining EAB information for a plurality of user equipments (UEs) based on the EAB configuration, wherein the EAB information includes the EAB category to be barred and one or more access classes to be barred based on the percentage of traffic to be barred; broadcasting the EAB information to the plurality of UEs via a system information block; and indicating the EAB information become available or removed via a pre-defined tag on a paging channel. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification