Abstract: A method of a terminal, according to an exemplary embodiment of the present disclosure, may include: requesting access to a mobile integrated access backhaul (IAB) based on cell search; receiving a tracking area (TA) update procedure stop request message from an Access and Mobility Management Function (AMF) of a core network; and deactivating a TA update procedure based on the TA update procedure stop request message.

Abstract: A method of an IAB node may comprise: receiving an RRC message including measurement control information from a base station; transmitting RRC reconfiguration information including the measurement control information to each of a plurality of terminals; receiving a measurement report message including a measurement report generated by each of the plurality of terminals based on the measurement control information from each of the plurality of terminals; and grouping the measurement report messages received from the plurality of terminals into a grouped message report message, and transmitting the grouped measurement report message to the base station according to a grouped measurement reporting periodicity.

Abstract: A method of an integrated access and backhaul (IAB) node may include: receiving, from a target base station, one or more user equipment (UE) context setup request messages including terminal radio resource reconfiguration information; sharing context information including the terminal radio resource reconfiguration information with a source IAB-distributed unit 1 (IAB-DU1); configuring terminal reconfiguration information using the shared context information; and transmitting one or more UE context setup response messages including the terminal reconfiguration information to the target base station in response to the one or more UE context setup request messages.

Abstract: An embodiment solid electrolyte includes a first compound and a second compound. The first compound is represented by a first chemical formula Li7-aPS6-a(X11-bX2b)a, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, and wherein 0<a?2 and 0<b<1, and the second compound is represented by a second chemical formula Li7-cP1-2dMdS6-c-3d(X11-eX2e)c, wherein X1 and X2 are the same or different and each represents F, Cl, Br, or I, wherein M represents Ge, Si, Sn, or any combination thereof, and wherein 0<c?2, 0<d<0.5, and 0<e<1.

Abstract: According to the present invention, a method of performing coordinated multipoint transmission and reception in an overlaid cellular system in which a first base station and a second base station overlay each other, the method comprising performing a handover using a coordinated multi-point transmission and reception scheme based on Channel State Indicator-Reference Signal (CSI-RS) information of user equipment by the first and second base stations.

Abstract: Provided is a method of managing mobility of a user equipment. The method includes: establishing by a first base station a communication with the user equipment; transmitting by the first base station a Coordinated Multiple Point (CoMP) addition request to a second base station; establishing by the first and second base stations a CoMP communication with the user equipment according to the CoMP addition request; transmitting by the first base station an anchor cell change request to the second base station; and operating the second base station as an anchor cell of the CoMP communication according to the anchor cell switch request.

Abstract: A base station determines whether the base station is in an overload state on the basis of an available resource of the base station and a load state of a mobility management entity (MME), and transmits the call setup request to MME if the base station is determined to be in a non-overload state. MME determines whether MME is in the overload state on the basis of an available resource of MME and a load state of a gateway according to the call setup request transmitted from the base station, and transmits the call setup request to the gateway if MME is determined to be in the non-overload state. The gateway determines whether the gateway is in the overload state according to the call setup request transmitted from MME, and performs a call setup procedure if the gateway is determined to be in the non-overload state.

Abstract: Disclosed is an operating method of a base station which includes searching user equipment, having a machine to machine (hereinafter, referred to as M2M) communication function, from user equipment under communication; sending an M2M call setup request to the searched user equipment; sending a handover call setup request to the remaining user equipment from among the user equipment under communication; and entering a power-saving mode.

Abstract: The present invention relates to a method and apparatus for controlling traffic which can be applied to the next generation mobile communication system. The method includes determining whether or not a load state of a cell is greater than a threshold, determining whether or not UE capable of D2D communication is present in UEs connected to the cell if, as a result of the determination, it is determined that the load state is greater than the threshold, performing a D2D communication configuration on the UE capable of D2D communication, determining whether or not UE capable of handover is present in remaining UEs not capable of the D2D communication, and performing a handover communication configuration on the UE capable of handover. According to the present invention, a signaling overload due to the simultaneous handover of a plurality of UEs or congestion of traffic in a target cell can be prevented.

Abstract: According to the present invention, a method of performing coordinated multi-point transmission and reception in an overlaid cellular system in which a first base station and a second base station overlay each other, the method comprising performing a handover using a coordinated multi-point transmission and reception scheme based on CRS-RS (Channel State Indicator-Reference Signal) information of user equipment by the first and second base stations.

Abstract: An apparatus for performing handover in an advanced mobile communication system which provides traffic service to a mobile terminal in a multiple cell environment, the apparatus includes: a handover control unit for recognizing cell determination parameters based on terminal status information collected from the mobile terminal and/or information on traffic provided to the mobile terminal; a handover determination unit for assigning predetermined weights to each of the cell determination parameters when handover is required; a cell selection control unit for determining importance of each of the cell determination parameters based on the assigned weights and generating cell selection information for selecting a candidate cell for handover, which is the most optimal for the cell determination parameters in the order of the importance, among cells adjacent to a serving cell to which the mobile terminal belongs; and a handover execution unit for executing the handover based on the cell selection information.

Abstract: Provided is a method of managing mobility of a user equipment. The method includes: establishing by a first base station a communication with the user equipment; transmitting by the first base station a Coordinated Multiple Point (CoMP) addition request to a second base station; establishing by the first and second base stations a CoMP communication with the user equipment according to the CoMP addition request; transmitting by the first base station an anchor cell change request to the second base station; and operating the second base station as an anchor cell of the CoMP communication according to the anchor cell switch request.

Abstract: Disclosed is a mobility management method for use in a cellular mobile communication system. The mobility management method is configured to save radio resources and provide a stable service by detecting a cell in which a dwell time of user equipment (UE) is short as an island cell and performing a direct handover (HO) to an appropriate cell without handing over the UE to the island cell. There are provided three methods including a base station-based method, a UE measurement-based method, and a UE history-based method according to how to measure a dwell time in which the UE stays in a cell, a component in which obtained information is received within a network, and how to process an HO using the information.

Abstract: Disclosed are an apparatus and a method for managing radio resources, capable of effectively managing radio resources. When a normal call and a handover call are attempted, radio resources are allocated and it is determined whether or not to perform an overload control based on received load related information and then it is determined whether or not to admit the call depending on an availability of a bandwidth for radio resources, a priority of real time traffic or a locking probability of data. The quality and efficiency of a mobile communication service is enhanced by pertaining an effective allocation on radio resources and controlling the load of radio resources in the mobile communication system. The radio resource managing apparatus and method using the same are applied to IMT (International Mobile Telecommunications)-Advanced system base station, thereby optimizing the efficiency of radio resources.

Abstract: Disclosed is a mobility management method for use in a cellular mobile communication system. The mobility management method is configured to save radio resources and provide a stable service by detecting a cell in which a dwell time of user equipment (UE) is short as an island cell and performing a direct handover (HO) to an appropriate cell without handing over the UE to the island cell. There are provided three methods including a base station-based method, a UE measurement-based method, and a UE history-based method according to how to measure a dwell time in which the UE stays in a cell, a component in which obtained information is received within a network, and how to process an HO using the information.

Abstract: A base station determines whether the base station is in an overload state on the basis of an available resource of the base station and a load state of a mobility management entity (MME), and transmits the call setup request to MME if the base station is determined to be in a non-overload state. MME determines whether MME is in the overload state on the basis of an available resource of MME and a load state of a gateway according to the call setup request transmitted from the base station, and transmits the call setup request to the gateway if MME is determined to be in the non-overload state. The gateway determines whether the gateway is in the overload state according to the call setup request transmitted from MME, and performs a call setup procedure if the gateway is determined to be in the non-overload state.

Abstract: Provided is a machine type communication terminal that may decrease load of a network and a server by performing an operation at different points in times. The machine type communication terminal may transmit data to the server via the network. A plurality of machine type communication terminals, the network, and the server may randomize operation start points in times of the machine type communication terminals in order to differentiate the operation start points in times.

Abstract: Provided are a method and a base station for determining a handover type, and a method for handover between base stations in a wireless communication system using carrier aggregation. A serving base station may collect measurement information required to determine an optimal frequency band set from a neighboring base station and a user equipment. The serving base station may determine an optimal frequency band set for downlink handover and uplink hand over, and determine a type of the downlink handover and the uplink handover by performing data processing of the collected measurement information.

Abstract: A data transmission method of a Multimedia Broadcast/Multicast Service (MBMS) system is provided. The data transmission method includes scheduling multimedia data including a plurality of sub-frames to be transmitted for each of a plurality of scheduling intervals, generating scheduling information, and transmitting, in advance, the scheduling information to a terminal, so that the terminal may selectively receive a plurality of sub-frames corresponding to a first scheduling interval, based on the scheduling information.

Abstract: An apparatus for performing handover in an advanced mobile communication system which provides traffic service to a mobile terminal in a multiple cell environment, the apparatus includes: a handover control unit for recognizing cell determination parameters based on terminal status information collected from the mobile terminal and/or information on traffic provided to the mobile terminal; a handover determination unit for assigning predetermined weights to each of the cell determination parameters when handover is required; a cell selection control unit for determining importance of each of the cell determination parameters based on the assigned weights and generating cell selection information for selecting a candidate cell for handover, which is the most optimal for the cell determination parameters in the order of the importance, among cells adjacent to a serving cell to which the mobile terminal belongs; and a handover execution unit for executing the handover based on the cell selection information.