A method at a UE may include providing a first NAS connection with a network node through a first access node, wherein a first NAS CID is associated with the first NAS connection. While providing the first NAS connection, a second NAS CID may be allocated for a second NAS connection with the network node through a second access node. A registration request message may be transmitted to the network node to request the second NAS connection, wherein transmitting the registration request message includes performing integrity protection for the registration request message using the second NAS CID. A security mode command message may be received from the network node, wherein the security mode command message corresponds to the registration request message. Responsive to receiving the security mode command message, a security mode complete message may be transmitted to the network node through the second access node.

A method at a UE may include providing a first NAS connection with a network node through a first access node, wherein a first NAS CID is associated with the first NAS connection. While providing the first NAS connection, a second NAS CID may be allocated for a second NAS connection with the network node through a second access node. A registration request message may be transmitted to the network node to request the second NAS connection, wherein transmitting the registration request message includes performing integrity protection for the registration request message using the second NAS CID. A security mode command message may be received from the network node, wherein the security mode command message corresponds to the registration request message. Responsive to receiving the security mode command message, a security mode complete message may be transmitted to the network node through the second access node.

Provided are a cell search method and a terminal device. The method includes that a terminal device searches a cell to camp on, wherein the terminal device is in an inactive state, and searches for an acceptable cell and/or a suitable cell when the terminal device does not find any suitable cell to camp on, wherein the acceptable cell is a cell on which the terminal device is capable of camping and only obtaining a limited service, and the suitable cell is a cell on which the terminal device is capable of camping and obtaining a normal service, and when searching for an acceptable cell and/or a suitable cell, continues to maintain the inactive state and a timer, wherein the timer is a location update timer.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein disclose a method for downlink uplink collision handling in a wireless communication network.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein disclose a method for downlink uplink collision handling in a wireless communication network.

In an embodiment, a method may include transmitting, by a priority access user, one or more registration request messages to a spectrum access system. The method may further include receiving, by the priority access user, one or more registration response messages from the spectrum access system. The one or more registration response messages may contain an indication that the spectrum access system has time granular sharing capability. The method may further include transmitting, by the priority access user, one or more heartbeat messages to the spectrum access system. The one or more heartbeat messages may contain an indication of a heartbeat interval. The method may further include receiving, by the priority access user, one or more heartbeat response messages from the spectrum access system. The heartbeat response messages may contain an indication of a heartbeat interval that is longer than the indication of the one or more heartbeat messages.

In an embodiment, a method may include transmitting, by a priority access user, one or more registration request messages to a spectrum access system. The method may further include receiving, by the priority access user, one or more registration response messages from the spectrum access system. The one or more registration response messages may contain an indication that the spectrum access system has time granular sharing capability. The method may further include transmitting, by the priority access user, one or more heartbeat messages to the spectrum access system. The one or more heartbeat messages may contain an indication of a heartbeat interval. The method may further include receiving, by the priority access user, one or more heartbeat response messages from the spectrum access system. The heartbeat response messages may contain an indication of a heartbeat interval that is longer than the indication of the one or more heartbeat messages.

The present application provides a method and apparatus for supporting general registration of user equipment to facilitate MO only mode preferences.

The present disclosure is related to sending of a one time identifier of a UE during the NAS procedure. Specifically, the present disclosure relates to determining whether to use same one time identifier or different one time identifier during registration retry procedure.

The present disclosure is related to sending of a one time identifier of a UE during the NAS procedure. Specifically, the present disclosure relates to determining whether to use same one time identifier or different one time identifier during registration retry procedure.