Abstract:
Provided are a wireless relaying method, a method of controlling a relay mode, and a wireless relay apparatus using the wireless relaying method. The wireless relaying method of a relay node (RN) includes operating in an amplify-and-forward (AF) mode of amplifying and forwarding a received signal upon setup, broadcasting identifier (ID) information on the RN, and, when a mode change message is received from an evolved node-B (eNB), changing an operating mode to a decode-and-forward (DF) mode. Accordingly, it is possible to improve resource efficiency while having an advantage of minimum delay time for relay.
Abstract:
Methods for preventing address collisions in device-to-device (D2D) communications are disclosed. An operation method of a first terminal in a wireless communication network may comprise configuring an internet protocol (IP) address of the first terminal used for D2D communications; generating an announcement frame based on an address resolution protocol (ARP) including the IP address; and transmitting the announcement frame. Thus, a problem of collisions between IP addresses in D2D communications can be resolved.
Abstract:
Methods for flow control in a network are disclosed. In a dual connectivity network environment where a master base station and a secondary base station exist, an operation method of a master base station may comprise transmitting a data frame including a plurality of data packets to a secondary base station; receiving, from the secondary base station, a delivery status frame requesting retransmission of error data packet among the plurality of data packets; and retransmitting the error data packet indicated by the delivery status frame to the secondary base station. Therefore, network performance can be enhanced.
Abstract:
Disclosed are a method for scheduling control information and a method for receiving the scheduled control information in a mobile communication system. The method performed in a base station may comprise performing scheduling on a plurality of transmission time intervals (TTIs) including a first TTI to a Nth TTI which are temporally continuous, wherein N is a natural number larger than 1; and transmitting scheduling information obtained from the scheduling to a first terminal. Thus, power consumption of the terminal can be reduced, and overall system capacity can be increased.
Abstract:
A method for handover of a terminal using a multi-connection in a cellular communication system is disclosed. The method for handover according to the present invention includes a multi-connection setting procedure of setting a connection to a second base station in addition to a connection to a first base station according to movement of a terminal in a direction from the first base station to the second base station, and a connection release procedure of releasing the connection to the first base station. Specifically, the present invention may be applied in a multi-beam management environment of super high frequency (SHF) and extremely high frequency (EHF) bandwidths, and may obtain an effect of decreasing signaling overhead and process latency of a conventional handover method.
Abstract:
Provided is an operation method of a cellular telecommunication system for operating multiple beams. In an operation method of a base station, a beam identifier (ID) is allocated to each of the multiple beams, and a terminal reports a beam ID of a selected beam to the base station. When the operation method of the cellular telecommunication system is used, the base station can rapidly sense the entry of the terminal into a specific beam area. Even when the terminal moves between beam areas, it is possible to rapidly make a beam area change with a minimum overhead without performing random access again or performing a complex procedure such as a handover procedure.