A method of a network node for changing a first frequency of a first original cell, wherein one or more wireless communication devices are served by the original cell, and wherein the network node controls a plurality of other cells. The method comprises selecting one or more second frequency of an unlicensed spectrum that the network node should switch the original cell to, determining a second cell on the selected one or more second frequency as target cell and causing the target cell to maintain the same neighbor cell relations as the original cell. The method also comprises moving the one or more wireless communication devices from the original cell to the target cell, turning off the original cell when the one or more wireless communication devices have been moved from the original cell to the target cell and informing one or more neighboring network nodes of the frequency change to the one or more second frequency. Also disclosed is a computer program product, an arrangement and a network node.

The present invention relates to a handover method and apparatus in a wireless communication system supporting an eICIC function. A communication method of a first base station in a heterogeneous network wireless communication system, which includes the first base station and a second base station and supports a cell range expansion (CRE) function, comprises the steps of: monitoring whether the cell range expansion function is deactivated; when the deactivation of the cell range expansion function is detected, generating a handover request message; and transmitting the handover request message to the second base station.

The present invention includes a plurality of access points (APs); a plurality of user equipments (UEs); and a macro cell, wherein the macro cell is configured to receive feedback including a first matrix comprising connection information between identifiers of the plurality of APs and the plurality of UEs, generate a second matrix including information on a specific AP to be activated, the specific AP being determined on the basis of the first matrix, and broadcast the generated second matrix.

The present invention provides a DRX control method and system in which power consumption of a mobile station can be reduced and an increase in the load of a network can be suppressed. A source base station forwards Dormancy Context, which is information for controlling the activity level of a mobile station that performs inter base station handover, to a target base station and, immediately after the mobile station completes handover, the target base station performs DRX control of the mobile station using the Dormancy Context.

A communication control method for performing an offload from a cellular RAN to a wireless LAN, includes a step of performing, by a user terminal, a network selection operation to select an appropriate access network with which a traffic of the user terminal is exchanged, from the cellular RAN and the wireless LAN on the basis of determination parameters. The determination parameters comprises at least one of: a cellular network status that is a network status concerning the cellular RAN; a wireless LAN network status that is a network status concerning the wireless LAN; a cellular radio link status that is a radio link status between the cellular RAN and the user terminal; and a wireless LAN radio link status that is a radio link status between the wireless LAN and the user terminal.

An example method is provided in one example embodiment and may include grouping a plurality of user equipment served by a serving cell radio into one or more groups based on an approximate location of each of the plurality of user equipment and a proximity of each of the plurality of user equipment in relation to each other; selecting a master user equipment for each group; receiving inter-frequency measurement information or inter-Radio Access Technology (RAT) measurement information associated with one or more neighboring cell radios; receiving a first service request for a first user equipment of a particular group; and selecting a particular neighboring cell radio for a service hand-out of the first user equipment based, at least in part, on the first service request and inter-frequency measurement information or inter-RAT measurement information received from a particular master user equipment for the particular group.

A user equipment (UE) is described that includes a PDCCH receiver configured to receive a PDCCH with a DCI format, the PDCCH scheduling a first physical uplink shared channel (PUSCH) in subframe n and a second PUSCH in subframe n+1, the DCI format including an information field for indicating that a starting position of the first PUSCH is later than an initial boundary of an initial symbol of the subframe n. The UE also includes a channel sensor configured to perform a first channel access before the first PUSCH. The UE further includes a PUSCH transmitter configured to transmit the first PUSCH and the second PUSCH, in a case when the first channel access is successful. The channel sensor is further configured to, in a case when the first channel access is not successful, perform a second channel access before the second PUSCH.

An analytics containment system store RSSI values of connected stations and corresponding time stamps. If two or more stations have RSSI values within a certain proximity within a certain time period, a first condition for identifying analytics poisoning has been satisfied. Additionally, if RSSI values for the two or more stations changes at similar rate, the stations have satisfied a second optional condition.

A method performed by a connectivity-related network entity is provided. The method includes: receiving, from a Packet Data Network (PDN) gateway and a Serving Gateway (SGW), a Short Message Service (SMS) message to be sent in a downlink; determining to use a control plane only, out of the control plane and a user plane, for transferring the SMS message; transmitting a trigger message to a user equipment to initiate establishment of connectivity with the user equipment via the control plane only and not via the user plane, wherein the user equipment starts a timer when the establishment of the control plane connectivity is initiated; receiving a response message from the user equipment; encapsulating the SMS message in a security protected Non-Access Stratum (NAS) message; and transmitting the security protected NAS message to the user equipment, in receipt of which the user equipment stops the timer.

Apparatuses, methods, and systems are disclosed for switching a communication mode of a remote UE. One apparatus includes a processor (405) and a radio transceiver (425) that communicates with a relay unit (120). Here, the processor (405) decides to handover the relay unit (120) and determines a group of one or more remote units (105) associated with the relay unit (120), wherein the relay unit (120) is a relay for the group. The processor (405) selects a target base unit (110) of a mobile communication network based on the relay unit (120) and the group of one or more remote units (105) and determines a first subgroup of remote units (105) from among the group of one or more remote units (105) that cannot be supported by the target base unit (110). The processor (405) also sends, to a remote unit (105) in the first subgroup of remote units (105), a command to resume communication with the mobile communication network without using the relay unit (120).