A method performed by a source master node performing a handover of a wireless device to a target node includes receiving, from a source secondary node, a first message comprising the secondary node configuration and a conditional reconfiguration. The source master node transmits, to the target node, a handover request message that includes an indication that the wireless device is configured with the conditional reconfiguration. The source master node receives, from the target node, a handover acknowledgement message indicating that the wireless device is to keep, modify, and/or release the conditional reconfiguration.

A method performed by a source master node performing a handover of a wireless device to a target node includes receiving, from a source secondary node, a first message comprising the secondary node configuration and a conditional reconfiguration. The source master node transmits, to the target node, a handover request message that includes an indication that the wireless device is configured with the conditional reconfiguration. The source master node receives, from the target node, a handover acknowledgement message indicating that the wireless device is to keep, modify, and/or release the conditional reconfiguration.

Example embodiments presented herein are directed towards a user equipment, and corresponding methods therein, for handling a cell change from a first cell to a second cell in a wireless communications network. Some example embodiments may also be directed towards the user equipment altering a duration of a measurement time over which at least one measurement is performed, and altering a measurement bandwidth of the at least one measurement. The alterations may be performed based on associated bandwidths of the first and second cells. Other example embodiments may be directed towards a network node, and corresponding method therein, for sending, to the user equipment, a notification of a cell change and information associated with the cell change. Example embodiments may further comprise the network node receiving measurement data of at least one measurement performed over an altered measurement bandwidth and an altered duration of measurement time, where the alterations are based on the information associated with the cell change.

Example embodiments presented herein are directed towards a user equipment, and corresponding methods therein, for handling a cell change from a first cell to a second cell in a wireless communications network. Some example embodiments may also be directed towards the user equipment altering a duration of a measurement time over which at least one measurement is performed, and altering a measurement bandwidth of the at least one measurement. The alterations may be performed based on associated bandwidths of the first and second cells. Other example embodiments may be directed towards a network node, and corresponding method therein, for sending, to the user equipment, a notification of a cell change and information associated with the cell change. Example embodiments may further comprise the network node receiving measurement data of at least one measurement performed over an altered measurement bandwidth and an altered duration of measurement time, where the alterations are based on the information associated with the cell change.

A method for providing a cooperative communication service by a macro Base Station (BS) in a mobile communication system is provided. The method includes generating at least one small cell BS group by grouping small cell BSs if there are small cell BSs of which a number is equal to or larger than a threshold small cell BS number within a service coverage of the macro BS, establishing a cooperative interface with a representative small cell BS among small cell BSs included in the at least one small cell BS group, and providing a cooperative communication service with the at least one small cell BS group using the cooperative interface.

A method for providing a cooperative communication service by a macro Base Station (BS) in a mobile communication system is provided. The method includes generating at least one small cell BS group by grouping small cell BSs if there are small cell BSs of which a number is equal to or larger than a threshold small cell BS number within a service coverage of the macro BS, establishing a cooperative interface with a representative small cell BS among small cell BSs included in the at least one small cell BS group, and providing a cooperative communication service with the at least one small cell BS group using the cooperative interface.

Methods, apparatus and systems using Enhanced Dedicated Core Network (DCN) selection are disclosed. One representative method includes receiving, by the core network entity from another core network entity, information indicating that a DCN type is new or has change for a wireless transmit/receive unit (WTRU); and sending a message, by the core network entity to the WTRU, including a new or a changed DCN type.

Provided are a method and device for processing a network access, and a network access method and device. The processing method includes: acquiring resource configuration information of an access signal group, the resource configuration information including: a sending resource required by a terminal for sending an access signal on a resource corresponding to the access signal group, and an access response resource corresponding to the access signal group, the access signal being used for accessing a network, the access response resource being used for indicating a resource used by a sending device of the access signal when receiving a response signal of the access signal; and notifying the terminal of the resource configuration information.

Provided are a method and device for processing a network access, and a network access method and device. The processing method includes: acquiring resource configuration information of an access signal group, the resource configuration information including: a sending resource required by a terminal for sending an access signal on a resource corresponding to the access signal group, and an access response resource corresponding to the access signal group, the access signal being used for accessing a network, the access response resource being used for indicating a resource used by a sending device of the access signal when receiving a response signal of the access signal; and notifying the terminal of the resource configuration information.

A system that determines to modify transmission power of a first small cell: determines an effect of modifying transmission power of the first small cell on a user equipment that is served by the first small cell; and controls modifying the transmission power of the first small cell based on the determination to modify the transmission power and the determined effect of modifying the transmission power on the user equipment that is served by the first small cell.