WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD
First Claim
1. A wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other,wherein the first wireless access point comprises:
- a transmission opportunity acquiring unit which acquires a transmission opportunity when data to be transmitted is generated; and
a transmitting unit of permission for use which transmits permission for use of channels which are not scheduled to use within the first cell, to the second wireless access point in a period in which the transmission opportunity is acquired, andthe second wireless access point comprises a communication unit which communicates with the wireless stations within the second cell via the channels in which the permission for use is acquired from the first wireless access point.
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Accused Products
Abstract
In order to provide a wireless communication system capable of improving the throughput of wireless communication by effectively using frequency resources, in a wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other, the first wireless access point includes a transmission opportunity acquiring unit which acquires a transmission opportunity when data to be transmitted is generated; and a transmitting unit of permission for use which transmits permission for use of channels which are not scheduled to use within the first cell, to the second wireless access point in a period in which the transmission opportunity is acquired, and the second wireless access point includes a communication unit which communicates with the wireless station within the second cell via the channel in which the permission for use is acquired from the first wireless access point.
63 Citations
19 Claims
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1. A wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other,
wherein the first wireless access point comprises: -
a transmission opportunity acquiring unit which acquires a transmission opportunity when data to be transmitted is generated; and a transmitting unit of permission for use which transmits permission for use of channels which are not scheduled to use within the first cell, to the second wireless access point in a period in which the transmission opportunity is acquired, and the second wireless access point comprises a communication unit which communicates with the wireless stations within the second cell via the channels in which the permission for use is acquired from the first wireless access point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other,
wherein each wireless station within the first cell comprises: -
a first data receiving unit which receives different data destined to different wireless stations transmitted from the first wireless access point on different channels by the orthogonal frequency-division multiple access; and a first acknowledgement transmitting unit which transmits a first acknowledgement if the data is correctly received by the first data receiving unit, and each wireless station within the second cell comprises; a second data receiving unit which receives data transmitted from the second wireless access point by the orthogonal frequency-division multiple access on a channel for which permission for use is acquired from the first wireless access point; and a second acknowledgement transmitting unit which transmits a second acknowledgement if the data is correctly received by the second data receiving unit. - View Dependent Claims (13, 14, 15)
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16. A wireless communication method to be performed by a wireless communication system in which a first wireless access point which communicates with one more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other, the method comprising:
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a transmission opportunity acquiring step of acquiring, by the first wireless access point, a transmission opportunity when data to be transmitted is generated; and a use permission transmitting step of transmitting, at the first wireless access point, permission for use of channels which are not scheduled to use within the first cell, to the second wireless access point in a period in which the transmission opportunity is acquired. - View Dependent Claims (17)
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18. A wireless communication method to be performed by a wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other, the method comprising:
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a first data receiving step of receiving different data, at the wireless stations within the first cell, destined to different wireless stations transmitted from the first wireless access point on different channels by the orthogonal frequency-division multiple access; a first acknowledgement transmitting step of transmitting, by the wireless stations within the first cell, an acknowledgement if the data is correctly received in the first data receiving step; a second data receiving step of receiving, by the wireless stations within the second cell, data transmitted from the second wireless access point by the orthogonal frequency-division multiple access on a channel for which permission for use is acquired from the first wireless access point; and a second acknowledgement transmitting step of transmitting, by the wireless stations within the second cell, an acknowledgement if the data is correctly received in the second data receiving step.
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19. A wireless access point in a wireless communication system in which a wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and another wireless access point which is capable of performing carrier sensing with the wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other,
wherein wireless access point comprises: -
a transmission opportunity acquiring unit which acquires a transmission opportunity when data to be transmitted is generated; and a transmitting unit of permission for use which transmits permission for use of channels which are not scheduled to use within the first cell, to the other wireless access point in a period in which the transmission opportunity is acquired.
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Specification