Communication terminal, communication system, and method for operating communication terminal

摘要

A communication terminal (30) includes a wireless communication unit (31) for transmitting and receiving radio signals, and a determination unit (transmission/reception timing adjustment unit 132) for determining a transmission period and a reception period in which the wireless communication unit (31) transmits and receives radio signals. In a case where a connection destination is switched from a first communication device currently in communication into a second communication device, when the second communication device transmits a predetermined signal in a transmission period for the communication with the first communication device, the determination unit changes a part of the transmission period for the communication with the first communication device into a reception period, to receive the predetermined signal from the second communication device.

主权项

1. A communication terminal comprising:
a communication unit for transmitting and receiving radio signals; a control unit coupled to the communication unit, comprising: a determination unit for determining a transmission period and a reception period in which the communication unit transmits and receives radio signals, and a channel allocation restriction unit for restricting allocation of an individual channel in a radio resource, wherein, in a handover, in a case where a connection destination is switched from a first communication device currently in communication with the communication unit into a second communication device, when the second communication device transmits a predetermined signal in a transmission period for the communication with the first communication device, the determination unit changes only a part of the transmission period for the communication with the first communication device into a reception period, in order that the communication unit receives the predetermined signal from the second communication device while maintaining communication with the first communication device; either one of the first communication device and the second communication device is a relay device that relays a radio signal, the relay device transmits a received radio signal after a certain time period elapses from the reception period; and where a relay destination of the relay device is a third communication device different from the first communication device, the channel allocation restriction unit causes the relay destination to restrict allocation of the individual channel with respect to a period other than a period that is changed from a transmission period into a reception period by the determination unit.