| 摘要 |
The present invention relates to a DSL method having preferably DMT frequency bands, which, contrary to the known arrangement having permanently associated upload and download channels, according to the invention comprises universal upload/download frequency channels UUDS (Universal Upload Download Channel) for the optional usage in each traffic direction. The selection and use of the channels for a traffic direction is carried out dynamically during the operation and preferably automatically according to the respectively pending transmission load with application-specific bandwidth adaptation, for example for download and upload applications, voice transmission, video conference, IP-TV and so forth. A particularly advantageous variant (DLC-ADSL, Dynamic Reverse Profile ADSL) is based on the known ADSL standardization with HDP profile (High Download Profile; fast download, slow upload) and an additional inverse profile with switched traffic direction of the transmission channels HUP (High Upload Profile; fast upload, slow download), wherein a switch can be easily carried out between them with a simple command sequence. A symmetrical profile, for example voice, image telephone, peer-to-peer computer coupling and the like, can be a further useful addition. |
