What access technology is utilized by DOCSIS 1.0 for sending data upstream?

The technology used by DOCSIS 1.0 for sending data upstream is Time Division Multiple Access (TDMA). This method allows multiple users to share the same transmission medium by assigning time slots for each user's data transmission. In the context of DOCSIS 1.0, this is particularly effective for upstream communication because it efficiently utilizes the available bandwidth by alternating the access to the channel among multiple users.

TDMA enables the cable modem to send its data during a designated time slot, reducing the chances of collisions on the network and optimizing the use of the upstream channel. This structure is suitable for environments where multiple users need to transmit data simultaneously but cannot all do so at once without coordination. By leveraging TDMA, DOCSIS 1.0 ensures that each user's data is transmitted in an orderly and timely fashion, which is crucial for maintaining network performance and stability.