A service layer entity may register to another service layer entity and proactively request to gain access to the local services hosted by the registrar entity. A registrar entity may accept a registree entity's registration request but only grant access of its partial services to the registree entity. If a registree entity does not need to proactively request the services within its registration request message, the registrar entity decides what services may be needed by the registree entity and grants access of those services to the registree entity.

A base station sends, to a wireless device, a system information block (SIB) indicating that restricted local operator services (RLOS) are supported by a public land mobile network, and receives, from the wireless device and based on the SIB indicating support for the RLOS, a preamble. The base station sends a random access response to the preamble and receives at least one first radio resource control (RRC) message comprising a first information element indicating that an RRC connection of the wireless device is for the RLOS and a second information element comprising an attach request message indicating, to a mobility management entity (MME) configured with an RLOS access point name, that an attach request of the wireless device is for the RLOS. The base station sends to the wireless device a second RRC message comprising an attach accept message indicating acceptance of the RLOS by the MME.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a user, input associated with a call request. The UE may select a first subscription, of at least two subscriptions associated with the UE, based at least in part on at least one parameter associated with a unified access control (UAC) check for the call request. Additionally, or alternatively, the UE may display, on a screen of the UE, an indication that the call request is barred based at least in part on the UAC check. Numerous other aspects are described.

An access barring method and apparatus and a communication system. The method includes: performing access barring check or access class determination by UE by using parameters defined for a new radio system. The parameters are applicable to all radio resource control (RRC) states. For different public land mobile networks (PLMNs) and/or network slicing, the parameters are identical or different. With the embodiments of this disclosure, selectable parameters are provided for a uniform access control mechanism defined by an NR system, thereby simplifying an access mechanism, and ensuring all-directional compatibility of a terminal state.

An access barring method and apparatus and a communication system. The method includes: performing access barring check or access class determination by UE by using parameters defined for a new radio system. The parameters are applicable to all radio resource control (RRC) states. For different public land mobile networks (PLMNs) and/or network slicing, the parameters are identical or different. With the embodiments of this disclosure, selectable parameters are provided for a uniform access control mechanism defined by an NR system, thereby simplifying an access mechanism, and ensuring all-directional compatibility of a terminal state.

The present disclosure relates to a communication scheme and system for converging a 5.sup.th generation (5G) communication system for supporting a data rate higher than that of a 4.sup.th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure provides a method for preventing a legacy terminal from camping on an enhanced LTE (eLTE) base station that is connected to only a next generation (NG) core by combining a legacy information element (IE) and a new IE carried in system information broadcast by the base station in a next generation mobile communication system.

The present disclosure relates to a communication scheme and system for converging a 5.sup.th generation (5G) communication system for supporting a data rate higher than that of a 4.sup.th generation (4G) system with an internet of things (IoT) technology. The present disclosure is applicable to intelligent services (e.g., smart home, smart building, smart city, smart car, connected car, health care, digital education, retail, and security and safety-related services) based on the 5G communication technology and the IoT-related technology. The present disclosure provides a method for preventing a legacy terminal from camping on an enhanced LTE (eLTE) base station that is connected to only a next generation (NG) core by combining a legacy information element (IE) and a new IE carried in system information broadcast by the base station in a next generation mobile communication system.

Embodiments of this disclosure provide a communications method, device, and system. The method includes: generating cell selection information, where the cell selection information is associated with a configuration parameter of a reference signal of a cell; and sending the cell selection information. In the embodiments of this disclosure, the cell selection information associated with the configuration parameter of the reference signal of the cell is generated and sent, so that a terminal can perform cell selection based on the cell selection information. Therefore, terminals supporting different reference signal configurations can be deployed in a network.

A cell reselection control method according to an embodiment comprises transmitting, by a base station configured to manage a cell having a first coverage and a second coverage as a portion enhanced more than the first coverage, to a radio terminal under the cell, a reselection instruction that instructs to reselect a neighboring cell different from the cell, and reselecting, by the radio terminal, the neighboring cell according to the reselection instruction when the radio terminal is in the second coverage.

A cell reselection control method according to an embodiment comprises transmitting, by a base station configured to manage a cell having a first coverage and a second coverage as a portion enhanced more than the first coverage, to a radio terminal under the cell, a reselection instruction that instructs to reselect a neighboring cell different from the cell, and reselecting, by the radio terminal, the neighboring cell according to the reselection instruction when the radio terminal is in the second coverage.