Wireless network relay apparatus
First Claim
1. A wireless network relay apparatus, which is equipped with a plurality of line terminating devices corresponding to a plurality of communication lines and which performs line limitation associated with an Adaptive Modulation Radio function, said wireless network relay apparatus comprising:
- a traffic measuring part configured to measure traffic, passing through the plurality of line terminating devices, in a plurality of directions, thus recording total traffic;
a modulation scheme detecting part configured to detect whether or not a modulation scheme is changed due to the Adaptive Modulation Radio function in a wireless area;
a modulation scheme judging part configured to specify the line terminating device of the communication line corresponding to the wireless area whose modulation scheme is changed and to judge whether or not a local modulation scheme should be changed;
a modulation scheme determining part configured to determine a desired modulation scheme based on the recorded traffic with the specified line terminating device when it is judged that the local modulation scheme should be changed; and
a modulation scheme changing part configured to change the local modulation scheme with the desired modulation scheme.
1 Assignment
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Accused Products
Abstract
A wireless network relay apparatus includes a Layer 2 switch and a line control device as well as wireless/wired line terminating devices performing band limitation associated with an AMR function. It measures traffic passing through each line terminating device in inflow/outflow path directions. Upon detecting a modulation scheme changed due to an AMR function in a wireless area, it may specify a line terminating device so as to read a desired modulation scheme from a transmission source modulation scheme conversion table of the line control device based on traffic. It may change a local modulation scheme with a desired modulation scheme when a difference therebetween is above a predetermined number of stages. By tracking a modulation scheme changed for a transmission destination, it is possible to appropriately change a modulation scheme for a transmission source, thus suppressing traffic without discarding necessary data.
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Citations
10 Claims
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1. A wireless network relay apparatus, which is equipped with a plurality of line terminating devices corresponding to a plurality of communication lines and which performs line limitation associated with an Adaptive Modulation Radio function, said wireless network relay apparatus comprising:
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a traffic measuring part configured to measure traffic, passing through the plurality of line terminating devices, in a plurality of directions, thus recording total traffic; a modulation scheme detecting part configured to detect whether or not a modulation scheme is changed due to the Adaptive Modulation Radio function in a wireless area; a modulation scheme judging part configured to specify the line terminating device of the communication line corresponding to the wireless area whose modulation scheme is changed and to judge whether or not a local modulation scheme should be changed; a modulation scheme determining part configured to determine a desired modulation scheme based on the recorded traffic with the specified line terminating device when it is judged that the local modulation scheme should be changed; and a modulation scheme changing part configured to change the local modulation scheme with the desired modulation scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A modulation scheme changing method adapted to a wireless network relay apparatus, which is equipped with a plurality of line terminating devices corresponding to a plurality of communication lines and which performs band limitation associated with an Adaptive Modulation Radio function, said modulation scheme changing method comprising:
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measuring traffic, passing through the plurality of line terminating devices in a plurality of directions, thus recording total traffic; detecting whether or not a modulation scheme is changed due to the Adaptive Modulation Radio function in the wireless area; specifying the line terminating device of the communication line corresponding to the wireless area whose modulation scheme is changed, thus judging whether or not a local modulation scheme should be changed; determining a desired modulation scheme based on the recorded traffic with the specified line terminating device when it is judged that the local modulation scheme should be changed; and changing the local modulation scheme with the desired modulation scheme.
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10. A non-transitory computer-readable storage medium with an executable program stored thereon, wherein the program causes a computer to execute a modulation scheme changing method adapted to a wireless network relay apparatus, which is equipped with a plurality of line terminating devices corresponding to a plurality of communication lines and which performs band limitation associated with an Adaptive Modulation Radio function, wherein the program instructs the computer to perform the following steps:
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measuring traffic, passing through the plurality of line terminating devices in a plurality of directions, and then recording total traffic; detecting whether or not a modulation scheme is changed due to the Adaptive Modulation Radio function in the wireless area; specifying the line terminating device of the communication line corresponding to the wireless area whose modulation scheme is changed, thus judging whether or not a local modulation scheme should be changed; determining a desired modulation scheme based on the recorded traffic with the specified line terminating device when it is judged that the local modulation scheme should be changed; and changing the local modulation scheme with the desired modulation scheme.
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Specification