A cell activation/deactivation method in a wireless communication system and an apparatus therefor are disclosed. Specifically, a method for activating/deactivating a secondary cell (SCell) by a UE in a wireless communication system supporting carrier aggregation includes: receiving an SCell addition related message from an eNB; partially activating one or more first SCell when a partial activation related message for the first SCell from among a plurality of SCells added according to the SCell addition related message is received from the eNB; and fully activating one or more second SCell when a full activation related message for the second SCell from among the plurality of SCells added according to the SCell addition related message is received from the eNB, wherein normal SCell operations are applied to the second SCell and only some of the normal SCell operations are applied to the first SCell.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a method of de-activating a local internet protocol access (LIPA) bearer supporting local breakout in a dual-connectivity architecture. When a master eNodeB (MeNB) determines to change a secondary eNodeB (SeNB) serving a user equipment (UE) or hand the UE over from the MeNB to an eNB, the MeNB may trigger a LIPA bearer de-activation process, and then trigger the process of change the SeNB serving the UE or hand the UE over from the MeNB to the eNB. Various examples also provide another method and an apparatus for de-activating a LIPA bearer, for bearer switch, for establishing a LIPA bearer. The methods and apparatus can establish, switch and correctly release local breakout bearer in a dual-connectivity architecture, so as to reduce the load of a core network of an operator.

A communication control apparatus according to a first feature is used in a mobile communication system. The communication control apparatus includes: a controller configured to perform control related to a radio access bearer established between a user terminal and a serving gateway. The radio access bearer is configured with: a first bearer between the user terminal and a base station; and a second bearer between the base station and the serving gateway. The communication control apparatus is positioned on the second bearer. The controller is configured to maintain at least some sections of the second bearer without releasing, even when the first bearer is released.

A method and system for processing signaling release indication cause between user equipment and a wireless network, the method comprising the steps of: monitoring, at the user equipment, whether a signaling connection release indication should be sent to the wireless network; appending, at the user equipment, a cause for the signaling connection release indication to the signaling connection release indication; sending the appended signaling connection release indication to the wireless network; receiving the signaling connection release indication at the wireless network; and filtering said cause to determine whether to raise an alarm.

A mobile application gateway configured to interconnect mobile communication devices on a cellular network with an enterprise network is provided. The mobile application gateway includes a voice and data signaling gateway configured to provide routing functionalities, service functionalities and admission control. A gateway GPRS support node (GGSN) is configured to establish a secure data session between one or more of the mobile communication devices and the enterprise network by establishing a GPRS tunneling protocol (GTP) tunnel between a carrier-hosted serving GPRS support node (SGSN) and the GGSN.

According to an example aspect of the present invention, there is provided a method comprising: receiving, from a network node, before entering a power saving state, an indication of a dependency between frequencies and time instances; identifying at least one frequency based on the indicated dependency and a moment of time; and selecting a cell utilizing the identified at least one frequency.

According to an example aspect of the present invention, there is provided a method comprising: receiving, from a network node, before entering a power saving state, an indication of a dependency between frequencies and time instances; identifying at least one frequency based on the indicated dependency and a moment of time; and selecting a cell utilizing the identified at least one frequency.

Certain aspects of the present disclosure are directed to a method for wireless communication. The method generally includes receiving a message for dual-active-protocol stack (DAPs) handover (HO) from a source network entity to a target network entity, wherein carrier-aggregation (CA) is configured with the source network entity prior to reception of the message for HO, deactivating the CA in response to reception of the message for handover (HO) to activate a single carrier mode with the source network entity, and performing the HO from the source network entity to the target network entity during a HO period, wherein the single carrier mode is maintained with the source network entity during at least a portion of the HO period, and wherein connection with the target network entity is maintained during the at least the portion of the HO period.

Certain aspects of the present disclosure are directed to a method for wireless communication. The method generally includes receiving a message for dual-active-protocol stack (DAPs) handover (HO) from a source network entity to a target network entity, wherein carrier-aggregation (CA) is configured with the source network entity prior to reception of the message for HO, deactivating the CA in response to reception of the message for handover (HO) to activate a single carrier mode with the source network entity, and performing the HO from the source network entity to the target network entity during a HO period, wherein the single carrier mode is maintained with the source network entity during at least a portion of the HO period, and wherein connection with the target network entity is maintained during the at least the portion of the HO period.

A communication apparatus determines whether the communication apparatus is to operate as a transmission apparatus for transmitting service data to be transferred by a service performed via a network, or operate as both the transmission apparatus for transmitting the service data to be transferred by the service performed via the network and a reception apparatus for receiving the service data to be transferred by the service performed via the network, terminates a connection with a communication partner apparatus in response to completion of transmission of the service data if the communication apparatus operates as the transmission apparatus, and terminates the connection with the communication partner apparatus in response to a user operation if the communication apparatus operates as both the transmission apparatus and the reception apparatus.