Wireless base station, load distribution apparatus, centralized control apparatus, wireless communication system, load distribution method and load distribution program

A load distribution apparatus connected to a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication for conducting load distribution for a radio channel being used in the wireless base stations, characterized by comprising:

• an allocation state acquiring unit that acquires allocation states of radio channels of respective wireless base stations;
• a load detecting unit that detects an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring unit;
• and
• a load distributing unit that allocates a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring unit and conducts load distribution for the overload radio channel.
• wherein:
• the load distributing unit comprises at least one of allocating units including:
• a first allocating unit that allocates a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating unit that allocates a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating unit that allocates, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that

• the wireless base station comprises;
• an allocation state acquiring unit that acquires allocation states of radio channels of adjacent wireless base stations adjacent to the wireless base station;
• a load detecting unit that detects an overload radio channel in an overload state in radio channels being used by the wireless base station;
• and
• a load distributing unit that allocates a new radio channel on the basis of the allocation states acquired by the allocation state acquiring unit and conducts load distribution for the overload radio channel.
• wherein:
• the load distributing unit comprises at least one of allocating units including:
• a first allocating unit that allocates a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating unit that allocates a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating unit that allocates, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that

• the wireless base station comprises:
• an allocation state acquiring unit that acquires allocation states of radio channels of respective wireless base stations;
• a load detecting unit that detects an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring unit;
• and
• a load distributing unit that allocates a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring unit and conducts load distribution for the overload radio channel.
• wherein;
• the load distributing unit comprises at least one of allocating units including:
• a first allocating unit that allocates a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating unit that allocates a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating unit that allocates, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication and a load distribution apparatus for conducting load distribution for a radio channel being used in the wireless base stations, characterized in that

• load distribution apparatus comprises;
• an allocation state acquiring unit that acquires allocation states of radio channels of respective wireless base stations;
• a load detecting unit that detects an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring unit;
• and
• a load distributing unit that allocates a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring unit and conducts load distribution for the overload radio channel.
• wherein:
• the load distributing unit comprises at least one of allocating units including:
• a first allocating unit that allocates a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating unit that allocates a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating unit that allocates, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A load distribution method for use in a wireless base station capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that the wireless base station carries out:

• an allocation state acquiring step of acquiring allocation states of radio channels of adjacent wireless base stations adjacent to the wireless base station;
• a load detecting step of detecting an overload radio channel in an overload state in radio channels being used by the wireless base station;
• and
• a load distributing step of allocating a new radio channel on the basis of the allocation states acquired by the allocation state acquiring step and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing step comprises at least one of allocating steps including:
• a first allocating step of allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating step of allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating step of allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A load distribution method for use with a load distribution apparatus connected to a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication for conducting load distribution for a radio channel being used in the wireless base stations, characterized in that the load distribution apparatus carries out:

• an allocation state acquiring step of acquiring allocation states of radio channels of respective wireless base stations;
• a load detecting step of detecting an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring step;
• and
• a load distributing step of allocating a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring step and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing step comprises at least one of allocating steps including:
• a first allocating step of allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating step of allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating step of allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A computer-readable medium storing a load distribution program to be executed in a wireless base station capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that the wireless base station is made to execute:

• allocation state acquiring processing of acquiring allocation states of radio channels of adjacent wireless base stations adjacent to the wireless base station;
• load detecting processing of detecting an overload radio channel in an overload state in radio channels being used by the wireless base station;
• and
• load distributing processing of allocating a new radio channel on the basis of the allocation states acquired by the allocation state acquiring processing and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing processing comprises at least one of allocating processing including:
• a first allocating processing of allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating processing of allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating processing of allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A computer-readable medium storing a load distribution program to be executed in a load distribution apparatus connected to a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication for conducting load distribution for a radio channel being used in the wireless base stations, characterized in that the load distribution apparatus is made to execute:

• allocation state acquiring processing of acquiring allocation states of radio channels of respective wireless base stations;
• load detecting processing of detecting an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring processing;
• and
• load distributing processing of allocating a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring processing and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing processing comprises at least one of allocating processing including:
• a first allocating processing of allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating processing of allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating processing of allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless base station capable of allocating a plurality of radio channels to be used for wireless communication, characterized by comprising:

• allocation state acquiring means for acquiring allocation states of radio channels of adjacent wireless base stations adjacent to the wireless base station;
• load detecting means for detecting an overload radio channel in an overload state in radio channels being used by the wireless base station;
• and
• load distributing means for allocating a new radio channel on the basis of the allocation states acquired by the allocation state acquiring means and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing means comprises at least one of allocating means including:
• a first allocating means for allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating means for allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating means for allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A load distribution apparatus connected to a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication for conducting load distribution for a radio channel being used in the wireless base stations, characterized by comprising:

• allocation state acquiring means for acquiring allocation states of radio channels of respective wireless base stations;
• load detecting means for detecting an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring means;
• and
• load distributing means for allocating a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring means and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing means comprises at least one of allocating means including:
• a first allocating means for allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating means for allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating means for allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that

• the wireless base station comprises:
• allocation state acquiring means for acquiring allocation states of radio channels of adjacent wireless base stations adjacent to the wireless base station;
• load detecting means for detecting an overload radio channel in an overload state in radio channels being used by the wireless base station;
• and
• load distributing means for allocating a new radio channel on the basis of the allocation states acquired by the allocation state acquiring means and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing means comprises at least one of allocating means including:
• a first allocating means for allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating means for allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating means for allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication, characterized in that

• the wireless base station comprises:
• allocation state acquiring means for acquiring allocation states of radio channels of respective wireless base stations;
• load detecting means for detecting an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring means;
• and
• load distributing means for allocating a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring means and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing means comprises at least one of allocating means including:
• a first allocating means for allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating means for allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating means for allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.

A wireless communication system comprising a plurality of wireless base stations capable of allocating a plurality of radio channels to be used for wireless communication and a load distribution apparatus for conducting load distribution for a radio channel being used in the wireless base stations, characterized in that

• load distribution apparatus comprises:
• allocation state acquiring means for acquiring allocation states of radio channels of respective wireless base stations;
• load detecting means for detecting an overload wireless base station using an overload radio channel in an overload state on the basis of the allocation states acquired by the allocation state acquiring means;
• and
• load distributing means for allocating a new radio channel to the overload wireless base station on the basis of the allocation states acquired by the allocation state acquiring means and conducting load distribution for the overload radio channel.
• wherein:
• the load distributing means comprises at least one of allocating means including:
• a first allocating means for allocating a radio channel not being used in the adjacent wireless base station adjacent to the overload wireless base station, as a new radio channel to the overload wireless base station;
• a second allocating means for allocating a radio channel being used in the adjacent wireless base station, as a new radio channel to the overload wireless base station;
• and
• a third allocating means for allocating, an exclusive radio channel which is a radio channel not being used in the overload wireless base station and which is being exclusively used in the adjacent wireless base station, as a new radio channel to the overload wireless base station.