System for ranging based on partitioned radio resource

A terminal, comprising:

• a receiving unit configured to receive information about a first radio resource assigned to a base station (BS);
• and
• a transmission unit configured to transmit a ranging signal to the BS based on the received information about the first radio resource,
• wherein where a ranging response signal corresponding to the transmitted ranging signal is not received by the receiving unit, the receiving unit is configured to receive information about a second radio resource from the BS and the transmission unit is configured to transmit the ranging signal to the BS based on the information about the second radio resource.

A ranging method, comprising:

• grouping terminals associated with a base station (BS) device into a plurality of groups;
• allocating a radio resource assigned to the BS device to each of the plurality of groups;
• transmitting, to a terminal included in a first group of the plurality of groups, information about a radio resource assigned to the first group;
• receiving a ranging signal from the terminal using the radio resource assigned to the first group;
• and
• in response to not receiving the ranging signal, assigning the terminal to be included in a second group of the plurality of groups.

A computer-readable storage medium storing a program for ranging in a wireless communication system, comprising instructions to cause a computer to:

• group terminals associated with a base station (BS) device into a plurality of groups;
• allocate a radio resource assigned to the BS device to each of the plurality of groups;
• transmit, to a terminal included in a first group of the plurality of groups, information about a radio resource assigned to the first group;
• receive a ranging signal from the terminal using the radio resource assigned to the first group;
• and
• in response to not receiving the ranging signal, assign the terminal to be included in a second group of the plurality of groups.