Method and apparatus for using unlicensed band in communication system

A method of a second module of a base station in a wireless communication system, the method comprising:

• receiving a resource allocation request message associated with an unlicensed band from a first module if use of the unlicensed band is needed;
• determining whether a resource of the unlicensed band is allocable;
• and
• if the resource of the unlicensed band is allocable, transmitting a response message including information associated with a time when to use the unlicensed band,
• wherein the request message comprises at least one of a minimum use time of a resource of the unlicensed band, a period, a channel list, a bandwidth desired to be used, and neighboring base station information for each channel,
• wherein the response message comprises at least one of a period of an allocated resource in association with the unlicensed band, an allocated channel, and an allocated bandwidth, and
• wherein the allocated resource of the unlicensed band is a dedicated service period for a terminal connected to the first module.

A first module of a base station in a wireless communication system, the first module comprising:

• a transceiver;
• and
• a controller configured to:
• transmit a resource allocation request message associated with an unlicensed band to a second module if use of the unlicensed band is needed;
• receive, from the second module, a response message including information associated with a time when to use the unlicensed band;
• and
• allocate, based on the response message, a resource of the unlicensed band to a terminal,
• wherein the request message comprises at least one of a minimum use time of a resource of the unlicensed band, a period, a channel list, a bandwidth desired to be used, neighboring base station information for each channel,
• wherein the response message comprises at least one of a period of an allocated resource in association with the unlicensed band, an allocated channel, and an allocated bandwidth, and
• wherein the allocated resource of the unlicensed band is a dedicated service period for a terminal connected to the first module.

A second module of a base station in a wireless communication system, the second module comprising:

• a transceiver;
• and
• a controller configured to:
• receive a resource allocation request message associated with an unlicensed band from a first module if use of the unlicensed band is needed;
• determine whether a resource of the unlicensed band is allocable;
• and
• transmit a response message including information associated with a time when to use the unlicensed band if the resource of the unlicensed band is allocable,
• wherein the request message comprises at least one of a minimum use time of a resource of the unlicensed band, a period, a channel list, a bandwidth desired to be used, and neighboring base station information for each channel,
• wherein the response message comprises at least one of a time at which a resource of the unlicensed band is allocated, a period of the allocated resource, an allocated channel, and an allocated bandwidth, and
• wherein the allocated resource of the unlicensed band is a dedicated service period for a terminal connected to the first module.