COMMUNICATION CONTROL APPARATUS, COMMUNICATION TERMINAL APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
2 Assignments
0 Petitions
Accused Products
Abstract
The amount of information reported by a communication terminal apparatus to a communication control apparatus is reduced based on the congestion status of communication. Communication control 100 apparatus communicates with a communication terminal apparatus using frequency channels composed of two or more sub-channels defined by a predetermined frequency band includes: receiver 113 for receiving information data destined to the terminal apparatus; scheduler 113 for generating assignment information indicating the status of assignment of the received information data to each sub-channel; congestion information generator 103 for generating congestion information indicating the congestion degree of each sub-channel based on the generated assignment information; control information generator 104 for generating control information including the generated congestion information; and transmitter 111 for transmitting the generated control information to the terminal apparatus.
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Citations
57 Claims
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1-29. -29. (canceled)
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30. A communication control apparatus being applied to a wireless communication system in which transmission from a communication control apparatus to a communication terminal apparatus is performed using frequency channels composed of two or more sub-channels defined by a predetermined frequency band, said control apparatus comprising:
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a scheduler for assigning information data to be sent to said communication terminal apparatus, to each sub-channel; a congestion information generator for generating congestion information indicating the congestion degree of each of the sub-channel; a control information generator for generating control information containing the generated congestion information; a transmitter for transmitting the generated control information to said communication terminal apparatus; and a receiver for receiving assignment requesting sub-channel information identifying the sub-channels selected by said communication terminal apparatus based on said congestion information, wherein said scheduler assigns information data to each sub-channel based on the received assignment requesting sub-channel information. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A communication terminal apparatus being applied to a wireless communication system in which transmission from a communication control apparatus to a communication terminal apparatus is performed using frequency channels composed of two or more sub-channels defined by a predetermined frequency band, said terminal apparatus comprising:
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a receiver for receiving control information containing congestion information indicating congestion degree of each sub-channel; a reception quality measuring unit for measuring reception quality of each sub-channel to generate reception quality information; a sub-channel request generator for selecting sub-channels requesting assignment as assignment requesting sub-channels based on the congestion information included in received control information in order to generate assignment requesting sub-channel information for identifying the selected assignment requesting sub-channels; and a transmitter for transmitting the generated assignment requesting sub-channel information to said communication control apparatus. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A wireless communication system in which transmission from a communication control apparatus to a communication terminal apparatus is performed using frequency channels composed of two or more sub-channels defined by a predetermined frequency band, said communication control apparatus comprising:
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a scheduler for assigning information data to be sent to said communication terminal apparatus to each sub-channel; a congestion information generator for generating congestion information indicating the congestion degree of each sub-channel; a control information generator for generating control information containing the generated congestion information; a transmitter for transmitting the generated control information to said communication terminal apparatus; and a receiver for receiving assignment requesting sub-channel information for said communication terminal apparatus to identify the sub-channels selected based on said congestion information, and said communication terminal apparatus comprising; a receiver for receiving control information including said congestion information; a reception quality measuring unit for measuring reception quality of each sub-channel to generate reception quality information based on the received control information; a sub-channel request generator for selecting, based on congestion information included in the received control information and the generated reception quality information, sub-channels as assignment requesting sub-channels that request assignment in order to generate assignment requesting sub-channel information including sub-channels for identifying the selected assignment requesting sub-channels; and a transmitter for transmitting the generated assignment requesting sub-channel information to said communication control apparatus, wherein said scheduler determines the assignment of information data to each sub-channel based on said assignment requesting sub-channel information. - View Dependent Claims (54, 55)
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56. A communication method of a communication control apparatus applied to a wireless communication system in which transmission from a communication control apparatus to a communication terminal apparatus is performed using frequency channels composed of two or more sub-channels defined by a predetermined frequency band, said method comprising the steps of:
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generating congestion information indicating congestion degree of each sub-channel; generating control information including the generated congestion information; and transmitting the generated control information to said terminal apparatus.
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57. A communication method of a communication terminal apparatus applied to a wireless communication system in which transmission from the communication control apparatus to a communication terminal apparatus is performed using frequency channels composed of two or more sub-channels defined by a predetermined frequency band, said method comprising the steps of:
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receiving control information including congestion information indicating congestion degree of each sub-channel; measuring reception quality of each sub-channel to generate reception quality information; selecting a sub-channel requesting assignment as an assignment requesting sub-channel based on the congestion information included in the received control information and the generated reception quality information in order to generate assignment requesting sub-channel information including sub-channels for identifying the selected assignment requesting sub-channels; and transmitting the generated assignment requesting sub-channel information to said communication control apparatus.
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Specification