| 摘要 |
PROBLEM TO BE SOLVED: To provide technology for improving the performance of DSL modems. SOLUTION: A DSL duplexing ratio for a new communication is selected according to the communications needs of an application. Namely, a required upstream and downstream bit rate for application communications is determined. From the ratio of these bit rates, a desired duplexing ratio is calculated. Next, the operation of the modem is adapted to choose a duplexing ratio that approximates the desired duplexing ratio for the application. To optimize modem operation, the size and position of the upstream and downstream bandwidths used for transmission are selected when the bit rate necessary for making the transmission is less than the total available bandwidth provided by the chosen duplexing ratio. COPYRIGHT: (C)2003,JPO
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