FIRST WIRELESS COMMUNICATION DEVICE, SECOND WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD

1 . A first wireless communication device included in a wireless communication system, the first wireless communication device comprising:

a communicator configured to perform communication with a second wireless communication device supporting a survival time; and

a controller configured to:

control allocation of a radio resource for data transmission in terms of frequency band and time domain, in a survival time mode in which the survival time is being applied, and

control, in accordance with the survival time and information on a radio measurement duration during which the second wireless communication device performs radio measurement, configuration of the radio measurement duration.

2 . The first wireless communication device according to claim 1 ,

wherein the radio measurement duration is a duration during which communication with the second wireless communication device does not need to be performed.

3 . The first wireless communication device according to claim 2 ,

wherein, when the radio measurement duration is equal to or shorter than the survival time, the controller performs control such that the second wireless communication device does not perform the radio measurement.

4 . The first wireless communication device according to claim 3 ,

wherein, when the radio measurement duration is longer than the survival time, the controller performs control such that the second wireless communication device performs the radio measurement.

5 . The first wireless communication device according to claim 3 ,

wherein, when the radio measurement duration is longer than the survival time, and a difference between the radio measurement duration and the survival time is a first length of time or shorter, the controller performs control such that the second wireless communication device does not perform the radio measurement.

6 . The first wireless communication device according to claim 1 ,

wherein, when reception of data from the second wireless communication device has failed, the controller transmits a signal to the second wireless communication device, the signal enabling the second wireless communication device to recognize that the data reception has failed, and cause the second wireless communication device to transition to a survival time duration.

7 . The first wireless communication device according to claim 1 ,

wherein the controller does not allocate, as a radio resource to be added in order to reinforce data transmission in a survival time duration, a radio resource that overlaps, in the time domain, a radio resource used in a duration other than the survival time duration.

8 . The first wireless communication device according to claim 1 ,

wherein the controller determines, depending on transmission power, whether or not to allocate, as the radio resource in the survival time mode, a radio resource that overlaps, in the time domain, a radio resource used in a duration other than the survival time mode.

9 . The first wireless communication device according to claim 1 ,

wherein, in a survival time duration, the controller does not use, for data transmission, a radio resource used in a duration other than the survival time duration.

10 . The first wireless communication device according to claim 1 ,

wherein the radio measurement duration is a Measurement Gap.

11 . The first wireless communication device according to claim 1 ,

wherein the survival time is a data transmission interval of the second wireless communication device.

12 . A second wireless communication device included in a wireless communication system and supporting a survival time, the second wireless communication device comprising:

a second communicator configured to perform communication with a first wireless communication device; and

a second controller to which a radio resource for data transmission in terms of frequency band and time domain, in a survival time mode in which the survival time is being applied, is allocated by the first wireless communication device, and for which, in accordance with the survival time and information on a radio measurement duration during which radio measurement is performed, configuration of the radio measurement duration is controlled by the first wireless communication device.

13 . A wireless communication system comprising a first wireless communication device and a second wireless communication device supporting a survival time,

the first wireless communication device including:

a communicator configured to perform communication with the second wireless communication device; and

a controller configured to control allocation of a radio resource for data transmission in terms of frequency band and time domain, in a survival time mode in which the survival time is being applied, and configured to control, in accordance with the survival time and information on a radio measurement duration during which the second wireless communication device performs radio measurement, configuration of the radio measurement durations, and

the second wireless communication device including:

a second communicator configured to perform communication with the first wireless communication device; and

a second controller configured to, in the survival time mode, uses the radio resource allocated by the first wireless communication device for the communication and performs the radio measurement as controlled by the first wireless communication device.