Technologies like Opportunity-Driven Multiple Access (ODMA) may have flexibility regarding which devices serve in which roles.
Some advanced forms of transmission multiplexing combine frequency- and time-division approaches like OFDM or CDMA.
The data link layer in an air interface is often divided farther than the simple Media access control (MAC) and Logical link control (LLC) sublayers found in other OSI terminology.
Especially in mobile telecommunication and internet broadband (...) Maximal combined input ratio with respect to signal to noise ratio estimation smart matrix array for combine input signal gain separated them with filters and different types of output multiplexed schemes are used for approach to multiple users for example CDMA, FDMA, WCDMA, TDMA, and ODMA.
[clarification needed] Such way calls and network services are approach and authenticate to unique subscriber.