| 摘要 |
<p>A method and apparatus is provided within a system having a total bandwidth divided into multiple segments. The segments are preferably frequency segments in a frequency division multiplexing environment or time slot segments in a time division multiplexing environment. The system transmits first downstream information from a head end to a router within a first bandwidth segment and transmits second downstream information from the head end to the router within a second bandwidth segment. The router sends the first downstream information to a first destination and sends the second downstream information to a second destination. First upstream information is transmitted from the first destination and through the router to the head end within a bandwidth segment used for downstream transmission other than the first bandwidth segment. Second upstream information is transmitted from the second destination and through the router to the head end within a bandwidth segment used for downstream transmission other than the second bandwidth segment. Upstream information from a given destination is always sent over a different bandwidth from the bandwidth over which the downstream information was received. Further, the router directs respective downstream information to respective EUs while blocking other information to maintain privacy of information. <IMAGE></p> |
