Abstract:
Disclosed are a macro cell base station and a method for managing a connection with a small cell by: receiving a first measurement report message of the small cell from user equipment and deciding an activation of the connection with the small cell based on same; transmitting to the small cell a message indicating the activation of a connection with the user equipment, when the small cell has a different cell ID from a cell ID of the macro cell; receiving from the small cell a message for indicating scheduling for the user equipment; and indicating to the user equipment the connection with the small cell.
Abstract:
A device-to-device (D2D) terminal for communicating in a wireless communication system supporting D2D communication includes: a receiver configured to receive information for setting the D2D searching interval corresponding to a D2D service type or a D2D application type from a base station; and a processor configured to search an neighbor D2D terminal in a D2D searching interval corresponding to a first D2D service type or a first D2D application type to be executed based on the information for setting the D2D searching interval, to select any one D2D terminal from among the one or more searched neighbor D2D terminals in order to set a connection corresponding to the first D2D service type or the first D2D application type, and to control the D2D communication corresponding to the first D2D service type or the first D2D application type with the selected D2D terminal according to the connection.
Abstract:
A method and apparatus for updating information on a cellular system in a wireless communication system is provided. An access point (AP) transmits a request for information on a cellular system and an update configuration for the information on the cellular system to a multi-radio access technology (RAT) device supporting a plurality of RATs, receives a first response to the request, which includes the information on the cellular system, from the multi-RAT device, and receives a second response, which is an update of the first response, according to the update configuration from the multi-RAT device.
Abstract:
This method whereby a mobility management entity (MME) in a first communication system updates base station information in a converged network supporting multiple communication systems comprises the steps of: receiving a first message including changed information from a base station in a second communication system if information from and related to the base station in the second communication system has changed or if information related to a base station in the first communication system has changed; and updating with the changed information on the basis of the first message.
Abstract:
The present invention provides methods and apparatus for controlling and resolving a handover failure when a dynamic cell off is occurred during a handover procedure. According to one aspect of the present invention, a method for preventing a handover failure in a wireless access system supporting cell-on/off includes initiating a handover procedure to a target Base Station (BS) by a User Equipment (UE), receiving cell off indication information indicating that a cell of the target BS will be powered off by the UE, and discontinuing the handover procedure according to the cell off indication information by the UE.
Abstract:
The present application provides methods for controlling a small cell on or off procedure in a Small cell specific Gate Way (S-GW). One of the methods comprises steps of receiving a cell indication message from a Source Small Cell (SSC), the cell indication message includes a cell state change indication parameter indicating whether the SSC is to be on or off and a cell on/off timer parameter indicating a time duration for a cell on process or a cell off process; transmitting request message requesting to expand or shrink a cell coverage of a Target Small Cell (TSC) according to the cell state change indication parameter; and receiving a complete indication message indicating the cell on process or the cell off process is complete after the time duration indicated by the cell on/off timer parameter from the SSC.
Abstract:
A method of supporting signal transmission/reception using at least two RATs and apparatus therefor are disclosed. The present invention includes, receiving, at the user equipment concurrently connected a first base station of a first communication network supportive of a first RAT and a second serving base station of a second communication network supportive of a second RAT, a setup message indicating a handover from the second serving base station to a second target base station from a first base station, terminating a connection to the second serving base station, and establishing a connection to the second target base station. Before the connection to the second serving base station is terminated, data for a specific traffic type is transceived via the second serving base station. After the connection to the second target base station is established, the data for the specific traffic type is transceived via the second target base station. Data except the specific traffic type is transceived via the first base station.
Abstract:
A method and apparatus for dynamic configuration of a maximum number of sidelink retransmissions for a data unit in a wireless communication system is provided. A first wireless device in sidelink receives, from a network, information related to a first retransmission number for a first logical channel and a second retransmission number for a second logical channel. The first wireless device determines a retransmission number of a data unit among the first retransmission number and the second retransmission number, and performs sidelink transmission of the data unit to a second wireless device based on the retransmission number of the data unit.
Abstract:
In the present disclosure, a transmitting device transmits a first message comprising i) a first random access preamble with a first random access preamble identifier (RAPID) and ii) a first uplink payload; receives a random access response (RAR) medium access control (MAC) protocol data unit (PDU) including i) a first field set to represent presence of one or more RAPIDs and ii) the one or more RAPIDs; determines whether both of the first RAP and the first payload is successfully transmitted, based on whether the one or more RAPIDs include the first RAPID; and monitors a second message related to the first message based on determining that both of the first RAP and the first payload is successfully transmitted.
Abstract:
In the present disclosure, a UE transmits a random access preamble (RAP) on a physical random access channel (PRACH) and a control channel (CCCH) service data unit (SDU) on a physical uplink shared channel (PUSCH); and receives a medium access control (MAC) protocol data unit (PDU) based on transmitting the RAP and the CCCH SDU. The MAC PDU includes a first part, and a second part after the first part. The first part includes multiple UE contention resolution identities (UE CRIDs).