In our study, we propose to use TDMA for the multiple access mechanism.
In particular, the most attractive PHYs are those that utilize OFDMA as the multiple access mechanism to support several users at the same time.
In such conditions, the use of the contention access period (CAP) is required, where channel accesses in the uplink are coordinated by a slotted carrier sense multiple access mechanism with collision avoidance (CSMA/CA).
Due to the sharing of the wireless bandwidth among ad hoc stations, medium access control (MAC) may rely on physical carrier sensing multiple access mechanism with collision avoidance (CSMA/CA) to determine the idle channel, such as in the IEEE 802.11 distributed coordination function (DCF).
It is expected to provide good performance at the physical layer and to enable efficient multiple-access mechanisms by employing orthogonal frequency multiple access (OFDMA) technique [1].
Another advantage of parallel detection is the capability of implementing multiple channels and thus incrementing the throughput of free-space quantum communications channels using space-division multiple access (SDMA) mechanisms.
We are considering utilizing time division multiple access (TDMA) mechanism to reduce collisions and improve network throughput.
The Carrier Sense Multiple Access (CSMA) mechanism defines a probabilistic MAC family of protocols, where stations contending for the access to a shared medium must listen before transmitting.
State-based schedules use a time division multiple access (TDMA) mechanism that supports executing conditional semantics and making on-the-fly decisions at runtime in each communication cycle.
One major difference between these two tracks relies in that whether it should redesign the radio interface and multiple access control mechanism for cellular M2M networks.
The positioning information can be used to estimate the interference a node causes in other nodes of the network and thus improve the multiple access strategies, scheduling mechanisms, channel allocation algorithms, and routing protocols.
