Frequency allocation method and device for unauthorized frequency band

A device at a macro base station side in a communication system, comprising

• one or more processors configured to:
• acquire unlicensed frequency band allocation information from a controller in the communication system, to determine unlicensed frequency bands exclusively occupied by the macro base station among unlicensed frequency band resources;
• and
• generate information indicating the unlicensed frequency bands exclusively occupied by the macro base station, and notify one or more small base stations within a coverage of the macro base station of the unlicensed frequency bands exclusively occupied, wherein
• the unlicensed frequency bands are allocated to a plurality of macro base stations including the device having coverage ranges overlapping with one another in a mutually exclusive manner based on statuses of traffic load with a predetermined QoS requirement and interference statuses of the unlicensed frequency bands, such that a first unlicensed frequency band with a first interference status is allocated to a first macro base station with a first status of the traffic load with the predetermined QoS requirement, and that a second unlicensed frequency band with a second interference status is allocated to a second macro base station with a second status of the traffic load with the predetermined QoS requirement, the first interference status indicating lower interference than the second interference status, the first status of the traffic load with the predetermined QoS requirement being heavier than the second status of the traffic load with the predetermined QoS requirement.

A device at a small base station side in a communication system, comprising

• one or more processors configured to:
• determine accessible unlicensed frequency bands for the small base station based on information which is transmitted from a macro base station managing the small base station and which indicates unlicensed frequency bands exclusively occupied by the macro base station or available unlicensed frequency bands;
• and
• detect statuses of the accessible unlicensed frequency bands, and dynamically access to a specific unlicensed frequency band among the accessible unlicensed frequency bands based on a result of the detection, wherein
• the unlicensed frequency bands are allocated to a plurality of macro base stations including the macro base station having coverage ranges overlapping with one another in a mutually exclusive manner based on statuses of traffic load with a predetermined QoS requirement and interference statuses of the unlicensed frequency bands, such that a first unlicensed frequency band with a first interference status is allocated to a first macro base station with a first status of the traffic load with the predetermined QoS requirement, and that a second unlicensed frequency band with a second interference status is allocated to a second macro base station with a second status of the traffic load with the predetermined QoS requirement, the first interference status indicating lower interference than the second interference status, the first status of the traffic load with the predetermined QoS requirement being heavier than the second status of the traffic load with the predetermined QoS requirement.

A frequency allocation method for unlicensed frequency bands, comprising:

• acquiring, by a controller, statuses of traffic load with a predetermined quality-of-service (QoS) requirement of a plurality of macro base stations having coverage ranges overlapping with one another;
• detecting interference statuses of unlicensed frequency bands;
• allocating the unlicensed frequency bands to the plurality of macro base stations in a mutually exclusive manner based on the statuses of the traffic load with the predetermined QoS requirement and the detected interference statuses of the unlicensed frequency bands, such that a first unlicensed frequency band with a first interference status is allocated to a first macro base station with a first status of the traffic load with the predetermined QoS requirement, and that a second unlicensed frequency band with a second interference status is allocated to a second macro base station with a second status of the traffic load with the predetermined QoS requirement, the first interference status indicating lower interference than the second interference status, the first status of the traffic load with the predetermined QoS requirement being heavier than the second status of the traffic load with the predetermined QoS requirement;
• and
• generating unlicensed frequency band allocation information indicating the allocation of the unlicensed frequency bands,
• wherein the plurality of macro base stations are operated by different operators.