Abstract: Disclosed is an apparatus for managing a plurality of transmission points (TPs) including: configuring at least one grouping cell by logically grouping a plurality of spot coverages formed by the plurality of TPs within an overall coverage in a plurality of subbands, respectively, within an overall system band; and operating at least one of the plurality of subbands as a capacity layer for providing capacity to UE.

Abstract: A method and an apparatus for managing mobility of a terminal between heterogeneous networks. The method includes: generating applications each corresponding to a plurality of terminals and data units (DUs) of a plurality of heterogeneous networks using software defined network (SDN) technology; collecting radio channel measurement data on channels of radio networks from the plurality of terminals through terminal applications corresponding to the plurality of terminals; collecting an average value of radio resources used in radio units (RUs) of the plurality of heterogeneous networks and network congestion data of the RUs of the plurality of heterogeneous networks through DU applications corresponding to the DUs of the plurality of heterogeneous networks; and determining whether or not to change networks of the plurality of terminals on the basis of the radio channel measurement data, the average value of the radio resources, and the network congestion data.

Abstract: A base station of a mobile communication system divides an ultra wideband into a plurality of unit bands, uses a plurality of beam component carriers corresponding to the L3 CP dedicated unit band as a coverage layer by grouping in one cell in the L3 CP dedicated unit band and uses a plurality of beam component carriers corresponding to the UP dedicated unit band in the UP dedicated unit band as a plurality of capacitor layers by grouping in a plurality of cells of a smaller size than that of the grouping.

Abstract: An intelligent multiple access communication (MAC) control apparatus and method are disclosed. The intelligent MAC control apparatus includes a connection control unit, a resource management unit, a session control unit, a flow control unit, and a determination unit. The connection control unit connects at least one Radio Access Technology (RAT) and a wireless network. The resource management unit collects RAT information including information about available resources and radio state of the RAT. The session control unit checks the QoS of at least one connection target service. The flow control unit determines the priority of the connection target service, and selects a preferential connection target service. The determination unit determines a connection RAT for performing the preferential connection target service based on the QoS and the RAT information.

Abstract: Disclosed is a method for transmitting data between a terminal and a base station. The method includes: being assigned a scheduling request identifier (SRID) through a connection with the base station, in the terminal; configuring a scheduling request (SR) message and transmitting the scheduling request message to the base station when uplink traffic is generated, in the terminal; assigning an uplink resource based on the scheduling request message, in the base station; and transmitting data using the uplink resource, in the terminal.

Abstract: Disclosed is a first electronic device and the first electronic device includes: a transmitter transmitting data to a second electronic device; a receiver receiving a feed-back (hereinafter, referred to as a first feed-back) for the transmitted data from the second electronic device; and a processor deciding whether to transmit the data again or another data to the second electronic device, based on the first feed-back, in which when the first feed-back is negative, the transmitter retransmits the data under a predetermined condition, and when a feed-back (hereinafter, referred to as a second feed-back) received from the second electronic device is negative with respect to the data retransmitted under the predetermined condition, the transmitter re-retransmits at least a part of the data to the second electronic device.

Abstract: A terminal receives access priority information on a plurality of sub-beams configuring a beam from a base station, selects one of a plurality of beams, and selects one of a plurality of sub-beams of the selected beam on the basis of the access priority information to perform a random access.

Abstract: Provided is an antenna structure of a base station, comprising: at least one beamforming disposed to include an effective beam area having a first diameter and a non-overlapping beam area having a second diameter as a projection criterion of a bottom surface at a spot beam center of a spot beamby considering characteristics, performance, a base station coverage, and a height of the beamforming antenna and disposed so that the second diameter is smaller than the first diameter by a designated size. Accordingly, an enhanced communication based on a millimeter wave is provided.

Abstract: In a mobile communication network, after a target beam is determined based on signal intensity of a serving beam and a candidate beam, when the serving beam and the target beam are operated in the same base station, a terminal performs a beam switching procedure in a layer 2.

Abstract: A base station of a mobile communication system divides an ultra wideband into a plurality of unit bands, uses a plurality of beam component carriers corresponding to the L3 CP dedicated unit band as a coverage layer by grouping in one cell in the L3 CP dedicated unit band and uses a plurality of beam component carriers corresponding to the UP dedicated unit band in the UP dedicated unit band as a plurality of capacitor layers by grouping in a plurality of cells of a smaller size than that of the grouping.

Abstract: In a communication environment using a millimeter wave band, a method and apparatus that enable a base station to process data are provided. A protocol stack is generated based on a characteristic of traffic that is provided to a terminal, and the generated protocol stack is allocated to the terminal. Data to be provided to the terminal is processed according to the generated protocol stack, and data that is processed through a beam that is allocated based on a position vector of the terminal is transmitted.

Abstract: Provided is a network access management method of a terminal, the method including determining whether a terminal located adjacent to a railway dedicated wireless communication network is a common terminal or a railway dedicated terminal, based on a unique identifier (ID) of the terminal, and handing over the terminal to a different communication network allowing an access based on a result of the determining.

Abstract: A method and apparatus for allocating a resource in a heterogeneous network environment are provided. In a heterogeneous network environment in which small cells and a macrocell are mixed, a macro base station divides an entire frequency band that is allocated to a corresponding macrocell into a plurality of Frequency Partitions (FPs). The macro base station allocates some of the plurality of FPs to small cells that are included in the macrocell.

Abstract: A terminal starts a first timer for detecting an RLF (Radio Link Failure) when signal strength of a serving base station is lower than a reference value. The terminal triggers a handover without a TTT (Time to Trigger) for handover when signal strength of a target base station is greater than the signal strength of the serving base station by a first offset or more while the first timer is running. The terminal transmits a measurement report message regarding the signal strength of the target base station to the serving base station when a handover is triggered.

Abstract: A system that controls a train radio communication apparatus is provided. The control system periodically detects performance of each of a first train radio communication apparatus and a second train radio communication apparatus. The control system selects either one of the first train radio communication apparatus and the second train radio communication apparatus based on the detected performance. The control system transfers a signal that is received from the selected train radio communication apparatus.

Abstract: An access service network (ASN) gateway allocates one of IP addresses reserved for MTC communication on the basis of attachment information of a terminal, allocates port numbers by the number of ports requested by the terminal among unallocated port numbers belonging to the allocated IP address, and transmits the allocated IP address and port numbers to the terminal.

Abstract: In a network including a macrocell and a femtocell, a terminal measures a current mobility state indicating a base station that is currently associated with the terminal and a future mobility state indicating a base station that is to be associated with the terminal in the future, and calculates expectation rewards for the base stations in consideration of information on neighbor base stations provided from a serving base station. In addition, the terminal selects a base station providing the largest expectation reward.

Abstract: Provided is a network access management method of a terminal, the method including determining whether a terminal located adjacent to a railway dedicated wireless communication network is a common terminal or a railway dedicated terminal, based on a unique identifier (ID) of the terminal, and handing over the terminal to a different communication network allowing an access based on a result of the determining.

Abstract: An intelligent multiple access communication (MAC) control apparatus and method are disclosed. The intelligent MAC control apparatus includes a connection control unit, a resource management unit, a session control unit, a flow control unit, and a determination unit. The connection control unit connects at least one Radio Access Technology (RAT) and a wireless network. The resource management unit collects RAT information including information about available resources and radio state of the RAT. The session control unit checks the QoS of at least one connection target service. The flow control unit determines the priority of the connection target service, and selects a preferential connection target service. The determination unit determines a connection RAT for performing the preferential connection target service based on the QoS and the RAT information.

Abstract: Provided is a method for retransmission in a terminal and a base station, the method including: receiving a data burst transmitted by occupying at least one subframe from the other one of the terminal and the base station; determining a transmission timing for transmitting a feedback signal based on a value, determined by transmission information of the data burst including the number of subframes occupied by the data burst, and a frame offset; transmitting the feedback signal to the other one of the terminal and the base station at the transmission timing; and if an NACK message is included in the feedback signal, receiving the data burst retransmitted from the other one of the terminal and the base station.