Abstract:
A method of providing a multicast service is provided by a terminal in a terminal-to-terminal direct communication. The terminal transmits a service start request message requesting a start of a multicast service to a multicast server, and receives a service start response message including a result of permitting a start request from the multicast server. The terminal receives, via a base station, resource information of a resource which a multicast coordinator allocates to the multicast service in accordance with a request of the multicast server, and transmits multicast service data based on the resource information.
Abstract:
An exemplary embodiment of the present invention provides a method for managing, by a management system, an enterprise zone. The management system constructs information on a plurality of small cell base stations and at least one terminal. The management system allocates at least one closed subscriber group (CSG) ID to the enterprise zone including cells of the small cell base stations. Further, the management system transmits a message for adding the CSG ID to a whitelist of the terminal to the terminal.
Abstract:
An apparatus for allocating resources of a cell allocates some of the entire frequency band for a D2D link in the entire zone of the cell, allocates the rest of the entire frequency band for a cellular link in at least some zone of the cell, and allocates time resources different from those of D2D links of adjacent cells to the D2D link.
Abstract:
Disclosed are a method and an apparatus for managing a resource in a small cell environment. The method for managing a resource in a small cell environment by a macro base station for controlling connection between user equipment (UE) and a gateway (GW), includes: configuring at least one packet path between the GW and the UE through a bearer of the macro base station; determining whether to add at least one small base station in the macro base station to the at least one packet path according to signal strength of the at least one small base station from the UE; and changing the at least one packet path using a bearer of a small base station based on the result.
Abstract:
A method of selecting a plurality of cells and a method of distributed-transmitting data to enhance mobile data transmission rate in a wireless overlay network are disclosed. A cell selection method which selects a cell for distributed-transmission of data in a wireless overlay network of a plurality of cells may include receiving, by a base station, a request for distributed data transmission from a mobile terminal, and selecting a plurality of wireless communication devices for distributed-transmission of data to the mobile terminal among adjacent wireless communication devices to the mobile terminal based on received signal strength (RSS) information on the mobile terminal with respect to the adjacent wireless communication devices, available resource information on the adjacent wireless communication devices and a service profile of the mobile terminal.
Abstract:
When transmitting a user message, in a call setting period of a base station and a terminal and a radio connection state between a base station and a terminal, whenever a data transmittable channel resource is available, user messages of an amount corresponding to the available channel resource are transmitted. Therefore, user messages can be divided and transmitted according to an available channel in a call setting period.
Abstract:
The present invention relates to a wireless communication system that supports the mobility management in a small cell environment, the wireless communication system includes a user equipment configured to measure a signal strength of multiple small cells around and transmit the measurement result through a serving cell, and a multiple small base stations configured to store user equipment context information in determined preparation cells among the multiple small cells based on the measurement result, in case that the user equipment context information for cell A among the preparation cells is changed, wherein the multiple small base stations update the changed user equipment context information.
Abstract:
A cross carrier scheduling method is provided by a terminal. The terminal receives a control element including cross carrier scheduling configuration information from a base station, and sets a scheduling cell of a secondary cell in accordance with the cross carrier scheduling configuration information. The terminal starts to monitor scheduling information of the secondary cell at the scheduling cell from a time predefined between the base station and the terminal.
Abstract:
Disclosed is a controller managing a base station in a heterogeneous network environment constituted by a macro base station and a small cell base station group, including: a traffic managing unit managing traffic of the small cell base station group; and an operation controlling unit controlling an operation of at least one peripheral base station included in the small cell base station group based on the traffic of the small cell base station group, wherein the small cell base station group includes a center base station and the at least one peripheral base station and the small cell base station group is disposed in a macro cell configured by the macro base station.
Abstract:
Disclosed are a method for allocating a resource to a D2D link of a base station, including determining a D2D link resource to be allocated to the D2D link among cellular resources of the base station, and transmitting uplink control information including information on the D2D link resource to at least two terminals which are connected by the D2D link among a plurality of cellular terminals connected to the base station, and a method for transmitting/receiving data to and from a terminal, including: searching for a white space of cellular resources; transmitting a search result for the white space to a base station of coverage to which the terminal belongs; receiving resource information determined depending on the search result; and transmitting/receiving data to and from the adjacent terminals through the D2D link based on the resource information.