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 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 D2D service type or a first D2D application type to be executed on the basis of 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 determining candidate cooperative devices of client cooperation in a wireless communication system is provided. In addition, a method and apparatus for determining candidate source devices of client cooperation in a wireless communication system is provided. In addition, a method and apparatus for determining cooperative devices of client cooperation in a wireless communication system is provided. The client cooperation helps a source device communicating with a base station through a cooperative device.
Abstract:
A method for managing link failure, according to one embodiment of the present invention, comprises the steps of: receiving a link failure report (LFR) for notifying that a link between user equipment and an base station of a second RAT has been disassociated; requesting an entity of a first RAT, which manages interworking between the first RAT and the second RAT, to switch a flow of downlink data for the user equipment, which is to be transmitted to the base station of the second RAT, to a base station of the first RAT; establishing a direct tunnel between the base station of the first RAT and the base station of the second RAT by using an identifier of the base station of the second RAT, which is included in the LFR of the user equipment; and relaying the downlink data for the user equipment, which has been buffered in the base station of the second RAT up to before the switch of the flow after the disassociation of the link, from the base station of the second RAT to the user equipment.
Abstract:
The present invention provides a method and apparatus for supporting device-to-device (D2D) communication in a wireless communication system. The present invention obtains information on time and resources required for signal transmission of corresponding user equipment (UE), estimates transmission time of the signal transmission by using the information on time and resources, and checks propagation delay by comparing the estimated transmission time with reception time of a signal transmitted from an actual corresponding UE. The present invention compares the checked propagation delay with predetermined reference values for converting to D2D communication and determines whether to perform D2D communication. Also, the determining D2D communication may include determining conversion to D2D communication by taking account of a channel state of a received signal.
Abstract:
A method for and apparatus for performing handover in a wireless communication system is provided. A wireless device transmits measurement results configured for a secondary radio access technologies (RAT) system, receives information on routing modification based on the measurement results, from a network entity of a primary RAT system and performs a handover to a target access network according to the information on routing modification. The secondary RAT system is used for a user plane (U-plane) data, and the handover is determined based on at least one of a quality of service (QoS) information, load information about the primary RAT system and secondary RAT system, and a network preference information of the UE.
Abstract:
The present invention provides methods and apparatuses for supporting or controlling a small cell on or off procedure. One of the embodiment of the present application, the method comprises steps of receiving, by the MSC from a Source Small Cell (SSC), a cell indication message including a cell state change indication parameter indicating whether the SSC is to be off and a cell off timer parameter indicating a time duration for a cell off process; transmitting, by the MSC to the SSC, a cell off request message in order to accommodate an user equipment (UE) serviced from the SSC based on the cell state change indication parameter; and receiving, by the MSC from the SSC, an aggregated UE context transfer message requesting to perform a radio resource control (RRC) connection switching from the SSC to the MSC during a time duration indicated by the cell off timer parameter.
Abstract:
A resource allocation method of a relay station in a wireless communication system employing the relay station is provided. The method includes: receiving information on a resource allocation pattern for an access link and a backhaul link of a first frequency band; and determining a resource allocation pattern for an access link and a backhaul link of a second frequency band on the basis of the resource allocation pattern of the first frequency band, wherein the first frequency band is any one of an uplink frequency band and a downlink frequency band, and the second frequency band is a remaining one of the uplink frequency band and the downlink frequency band.
Abstract:
A method and apparatus for establishing a device-to-device (D2D) connection in a wireless communication system is provided. A network transmits a connection establishment request message to request of the D2D connection establishment to a first device and a second device, receives a connection establishment response message indicating whether to accept the request of the D2D connection establishment from the first device and the second device, and transmits a connection establishment confirm message to confirm the D2D connection establishment to a first device and a second device. The connection establishment request message includes at least one of a connection establishment type, a quality of (QoS) parameter for the D2D connection, and security information.
Abstract:
Disclosed is a method for a device-to-device (D2D) terminal establishing a link identifier in a wireless communication system supporting D2D communication. The method for the D2D terminal establishing the link identifier in the wireless communication system supporting D2D communication, comprises the steps of: searching nearby D2D terminals through an navigation slot; selecting a specific D2D terminal from the nearby D2D terminals and forming a D2D terminal link, and establishing the link identifier between the D2D terminal from the nearby D2D terminals and forming a D2D terminal link, and establishing the link identifier between the D2D terminal and the D2D terminal that is linked, wherein the link identifier uses an identifier of the two D2D terminals that are linked or is established as a link identifier which is predetermined in accordance with the location of a signal of the two D2D terminals that are linked inside the navigation slot.
Abstract:
Disclosed is a method for a device-to-device (D2D) terminal transmitting/receiving data in a wireless communication system supporting D2D communication. The method for the D2D terminal transmitting the data in the wireless communication system supporting D2D communication, comprises the steps of: establishing a link identifier between two D2D terminals and at least one connection identifier between the two D2D terminals; and transmitting the data by including the link identifier and the at least one connection identifier which are established.